diff --git a/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/fir/generation/FirKopyDeclarationGenerationExtension.kt b/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/fir/generation/FirKopyDeclarationGenerationExtension.kt
index 59a6ee0..bde1aab 100644
--- a/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/fir/generation/FirKopyDeclarationGenerationExtension.kt
+++ b/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/fir/generation/FirKopyDeclarationGenerationExtension.kt
@@ -127,6 +127,10 @@ internal class FirKopyDeclarationGenerationExtension(
 
         val atomicRefType: ConeKotlinType = createAtomicRefType(owner)
 
+        val atomicVisibility: Visibility =
+            calculateVisibility(owner).takeIf { it !is Visibilities.Public }
+                ?: Visibilities.Internal
+
         val atomicProperty: FirProperty =
             createMemberProperty(
                 owner = context.owner,
@@ -136,7 +140,7 @@ internal class FirKopyDeclarationGenerationExtension(
                 config = {
                     status { isOverride = false }
                     modality = Modality.FINAL
-                    visibility = calculateVisibility(owner)
+                    visibility = atomicVisibility
                 },
             )
         return listOf(atomicProperty.symbol)
diff --git a/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/ir/transformers/IrFunctionsTransformer.kt b/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/ir/transformers/IrFunctionsTransformer.kt
index b259d17..a52aa8f 100644
--- a/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/ir/transformers/IrFunctionsTransformer.kt
+++ b/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/ir/transformers/IrFunctionsTransformer.kt
@@ -9,11 +9,6 @@ import com.javiersc.kotlin.compiler.extensions.common.toName
 import com.javiersc.kotlin.compiler.extensions.ir.asIr
 import com.javiersc.kotlin.compiler.extensions.ir.declarationIrBuilder
 import com.javiersc.kotlin.compiler.extensions.ir.firstIrClass
-import com.javiersc.kotlin.kopy.KopyFunctionCopy
-import com.javiersc.kotlin.kopy.KopyFunctionInvoke
-import com.javiersc.kotlin.kopy.KopyFunctionSet
-import com.javiersc.kotlin.kopy.KopyFunctionUpdate
-import com.javiersc.kotlin.kopy.KopyFunctionUpdateEach
 import com.javiersc.kotlin.kopy.compiler.ir.utils.isKopyCopy
 import com.javiersc.kotlin.kopy.compiler.ir.utils.isKopyCopyOrInvoke
 import com.javiersc.kotlin.kopy.compiler.ir.utils.isKopySet
diff --git a/kopy-compiler/test-data/box/edge/simple-1.fir.ir.txt b/kopy-compiler/test-data/box/edge/simple-1.fir.ir.txt
index 0c7ea1d..a324e11 100644
--- a/kopy-compiler/test-data/box/edge/simple-1.fir.ir.txt
+++ b/kopy-compiler/test-data/box/edge/simple-1.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/simple-1.kt
           RETURN type=kotlin.Nothing from='public final fun <get-pet> (): com.javiersc.kotlin.kopy.playground.Pet declared in com.javiersc.kotlin.kopy.playground.House'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:pet type:com.javiersc.kotlin.kopy.playground.Pet visibility:private [final]' type=com.javiersc.kotlin.kopy.playground.Pet origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.<get-pet>' type=com.javiersc.kotlin.kopy.playground.House origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.House
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House' type=com.javiersc.kotlin.kopy.playground.House origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.House) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.House) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.House
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> declared in com.javiersc.kotlin.kopy.playground.House'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> declared in com.javiersc.kotlin.kopy.playground.House'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.House origin=null
     CONSTRUCTOR visibility:public <> (street:kotlin.String, pet:com.javiersc.kotlin.kopy.playground.Pet) returnType:com.javiersc.kotlin.kopy.playground.House [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/simple-1.kt
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.copy' type=com.javiersc.kotlin.kopy.playground.House origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.House, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> declared in com.javiersc.kotlin.kopy.playground.House' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> declared in com.javiersc.kotlin.kopy.playground.House' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.copy' type=com.javiersc.kotlin.kopy.playground.House origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.House, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.House, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.House [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/simple-1.kt
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.invoke' type=com.javiersc.kotlin.kopy.playground.House origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.House, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> declared in com.javiersc.kotlin.kopy.playground.House' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> declared in com.javiersc.kotlin.kopy.playground.House' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.invoke' type=com.javiersc.kotlin.kopy.playground.House origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.House, $receiver:S of com.javiersc.kotlin.kopy.playground.House.set, other:S of com.javiersc.kotlin.kopy.playground.House.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -249,17 +249,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/simple-1.kt
           RETURN type=kotlin.Nothing from='public final fun <get-age> (): kotlin.Int declared in com.javiersc.kotlin.kopy.playground.Pet'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:age type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Pet declared in com.javiersc.kotlin.kopy.playground.Pet.<get-age>' type=com.javiersc.kotlin.kopy.playground.Pet origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Pet
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Pet declared in com.javiersc.kotlin.kopy.playground.Pet' type=com.javiersc.kotlin.kopy.playground.Pet origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Pet) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Pet) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Pet
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> declared in com.javiersc.kotlin.kopy.playground.Pet'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> declared in com.javiersc.kotlin.kopy.playground.Pet'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Pet declared in com.javiersc.kotlin.kopy.playground.Pet.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Pet origin=null
     CONSTRUCTOR visibility:public <> (name:kotlin.String, age:kotlin.Int) returnType:com.javiersc.kotlin.kopy.playground.Pet [primary]
@@ -283,7 +283,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/simple-1.kt
           p1: GET_VAR 'val tmp_3: com.javiersc.kotlin.kopy.playground.Pet declared in com.javiersc.kotlin.kopy.playground.Pet.copy' type=com.javiersc.kotlin.kopy.playground.Pet origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Pet, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Pet declared in com.javiersc.kotlin.kopy.playground.Pet'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> declared in com.javiersc.kotlin.kopy.playground.Pet' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> declared in com.javiersc.kotlin.kopy.playground.Pet' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> origin=null
               $this: GET_VAR 'val tmp_3: com.javiersc.kotlin.kopy.playground.Pet declared in com.javiersc.kotlin.kopy.playground.Pet.copy' type=com.javiersc.kotlin.kopy.playground.Pet origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Pet, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Pet, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Pet [operator,infix]
       annotations:
@@ -300,7 +300,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/simple-1.kt
           p1: GET_VAR 'val tmp_4: com.javiersc.kotlin.kopy.playground.Pet declared in com.javiersc.kotlin.kopy.playground.Pet.invoke' type=com.javiersc.kotlin.kopy.playground.Pet origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Pet, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Pet declared in com.javiersc.kotlin.kopy.playground.Pet'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> declared in com.javiersc.kotlin.kopy.playground.Pet' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> declared in com.javiersc.kotlin.kopy.playground.Pet' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Pet> origin=null
               $this: GET_VAR 'val tmp_4: com.javiersc.kotlin.kopy.playground.Pet declared in com.javiersc.kotlin.kopy.playground.Pet.invoke' type=com.javiersc.kotlin.kopy.playground.Pet origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Pet, $receiver:S of com.javiersc.kotlin.kopy.playground.Pet.set, other:S of com.javiersc.kotlin.kopy.playground.Pet.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -485,16 +485,16 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/simple-1.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.String
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> declared in com.javiersc.kotlin.kopy.playground.House' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> declared in com.javiersc.kotlin.kopy.playground.House' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.House origin=null
                             value: CALL 'public final fun copy (street: kotlin.String, pet: com.javiersc.kotlin.kopy.playground.Pet): com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House' type=com.javiersc.kotlin.kopy.playground.House origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.House origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> declared in com.javiersc.kotlin.kopy.playground.House' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> declared in com.javiersc.kotlin.kopy.playground.House' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.House origin=null
                               pet: CALL 'public final fun copy (name: kotlin.String, age: kotlin.Int): com.javiersc.kotlin.kopy.playground.Pet declared in com.javiersc.kotlin.kopy.playground.Pet' type=com.javiersc.kotlin.kopy.playground.Pet origin=null
                                 $this: CALL 'public final fun <get-pet> (): com.javiersc.kotlin.kopy.playground.Pet declared in com.javiersc.kotlin.kopy.playground.House' type=com.javiersc.kotlin.kopy.playground.Pet origin=GET_PROPERTY
                                   $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.House origin=GET_PROPERTY
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> declared in com.javiersc.kotlin.kopy.playground.House' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> declared in com.javiersc.kotlin.kopy.playground.House' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.House> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.House origin=null
                                 name: GET_VAR 'it: kotlin.String declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.String origin=null
       VAR name:isOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/edge/simple-1.fir.txt b/kopy-compiler/test-data/box/edge/simple-1.fir.txt
index 50095f5..a6e6252 100644
--- a/kopy-compiler/test-data/box/edge/simple-1.fir.txt
+++ b/kopy-compiler/test-data/box/edge/simple-1.fir.txt
@@ -40,8 +40,8 @@ FILE: simple-1.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -76,8 +76,8 @@ FILE: simple-1.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Pet>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Pet>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Pet>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Pet>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/box/nest-copy-set.fir.ir.txt b/kopy-compiler/test-data/box/nest-copy-set.fir.ir.txt
index bd710a6..ead6f76 100644
--- a/kopy-compiler/test-data/box/nest-copy-set.fir.ir.txt
+++ b/kopy-compiler/test-data/box/nest-copy-set.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
           RETURN type=kotlin.Nothing from='public final fun <get-isValid> (): kotlin.Boolean declared in com.javiersc.kotlin.kopy.playground.Bar'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:isValid type:kotlin.Boolean visibility:private [final]' type=kotlin.Boolean origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.<get-isValid>' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Bar
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Bar) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Bar) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Bar
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
     CONSTRUCTOR visibility:public <> (baz:com.javiersc.kotlin.kopy.playground.Baz, isValid:kotlin.Boolean) returnType:com.javiersc.kotlin.kopy.playground.Bar [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.copy' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Bar, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.copy' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Bar, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Bar, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Bar [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.invoke' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Bar, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.invoke' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Bar, $receiver:S of com.javiersc.kotlin.kopy.playground.Bar.set, other:S of com.javiersc.kotlin.kopy.playground.Bar.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -249,17 +249,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
           RETURN type=kotlin.Nothing from='public final fun <get-text> (): kotlin.String declared in com.javiersc.kotlin.kopy.playground.Baz'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:text type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.<get-text>' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Baz
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Baz) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Baz) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Baz
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
     CONSTRUCTOR visibility:public <> (qux:com.javiersc.kotlin.kopy.playground.Qux, text:kotlin.String) returnType:com.javiersc.kotlin.kopy.playground.Baz [primary]
@@ -283,7 +283,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
           p1: GET_VAR 'val tmp_3: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.copy' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Baz, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
               $this: GET_VAR 'val tmp_3: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.copy' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Baz, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Baz, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Baz [operator,infix]
       annotations:
@@ -300,7 +300,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
           p1: GET_VAR 'val tmp_4: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.invoke' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Baz, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
               $this: GET_VAR 'val tmp_4: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.invoke' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Baz, $receiver:S of com.javiersc.kotlin.kopy.playground.Baz.set, other:S of com.javiersc.kotlin.kopy.playground.Baz.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -473,17 +473,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
           RETURN type=kotlin.Nothing from='public final fun <get-letter> (): kotlin.Char declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:letter type:kotlin.Char visibility:private [final]' type=kotlin.Char origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-letter>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Foo
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Foo
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     CONSTRUCTOR visibility:public <> (bar:com.javiersc.kotlin.kopy.playground.Bar, letter:kotlin.Char) returnType:com.javiersc.kotlin.kopy.playground.Foo [primary]
@@ -507,7 +507,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
           p1: GET_VAR 'val tmp_6: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_6: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Foo [operator,infix]
       annotations:
@@ -524,7 +524,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
           p1: GET_VAR 'val tmp_7: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_7: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Foo, $receiver:S of com.javiersc.kotlin.kopy.playground.Foo.set, other:S of com.javiersc.kotlin.kopy.playground.Foo.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -686,17 +686,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
           RETURN type=kotlin.Nothing from='public final fun <get-number> (): kotlin.Int declared in com.javiersc.kotlin.kopy.playground.Qux'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:number type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux.<get-number>' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Qux
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Qux) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Qux) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Qux
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> declared in com.javiersc.kotlin.kopy.playground.Qux'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> declared in com.javiersc.kotlin.kopy.playground.Qux'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
     CONSTRUCTOR visibility:public <> (number:kotlin.Int) returnType:com.javiersc.kotlin.kopy.playground.Qux [primary]
@@ -719,7 +719,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
           p1: GET_VAR 'val tmp_9: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux.copy' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Qux, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> declared in com.javiersc.kotlin.kopy.playground.Qux' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> declared in com.javiersc.kotlin.kopy.playground.Qux' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> origin=null
               $this: GET_VAR 'val tmp_9: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux.copy' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Qux, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Qux, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Qux [operator,infix]
       annotations:
@@ -736,7 +736,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
           p1: GET_VAR 'val tmp_10: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux.invoke' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Qux, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> declared in com.javiersc.kotlin.kopy.playground.Qux' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> declared in com.javiersc.kotlin.kopy.playground.Qux' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> origin=null
               $this: GET_VAR 'val tmp_10: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux.invoke' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Qux, $receiver:S of com.javiersc.kotlin.kopy.playground.Qux.set, other:S of com.javiersc.kotlin.kopy.playground.Qux.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -888,29 +888,29 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-set.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.Int
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                             value: CALL 'public final fun copy (bar: com.javiersc.kotlin.kopy.playground.Bar, letter: kotlin.Char): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               bar: CALL 'public final fun copy (baz: com.javiersc.kotlin.kopy.playground.Baz, isValid: kotlin.Boolean): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
                                 $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                   $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                 baz: CALL 'public final fun copy (qux: com.javiersc.kotlin.kopy.playground.Qux, text: kotlin.String): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
                                   $this: CALL 'public final fun <get-baz> (): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Baz origin=GET_PROPERTY
                                     $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                   qux: CALL 'public final fun copy (number: kotlin.Int): com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
                                     $this: CALL 'public final fun <get-qux> (): com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Qux origin=GET_PROPERTY
                                       $this: CALL 'public final fun <get-baz> (): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Baz origin=GET_PROPERTY
                                         $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                           $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                     number: GET_VAR 'it: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.Int origin=null
       VAR name:isOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/nest-copy-set.fir.txt b/kopy-compiler/test-data/box/nest-copy-set.fir.txt
index 8f464ad..17328b5 100644
--- a/kopy-compiler/test-data/box/nest-copy-set.fir.txt
+++ b/kopy-compiler/test-data/box/nest-copy-set.fir.txt
@@ -36,8 +36,8 @@ FILE: nest-copy-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -72,8 +72,8 @@ FILE: nest-copy-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -108,8 +108,8 @@ FILE: nest-copy-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -144,8 +144,8 @@ FILE: nest-copy-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/box/nest-copy-update.fir.ir.txt b/kopy-compiler/test-data/box/nest-copy-update.fir.ir.txt
index 35d6e77..51ef451 100644
--- a/kopy-compiler/test-data/box/nest-copy-update.fir.ir.txt
+++ b/kopy-compiler/test-data/box/nest-copy-update.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
           RETURN type=kotlin.Nothing from='public final fun <get-isValid> (): kotlin.Boolean declared in com.javiersc.kotlin.kopy.playground.Bar'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:isValid type:kotlin.Boolean visibility:private [final]' type=kotlin.Boolean origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.<get-isValid>' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Bar
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Bar) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Bar) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Bar
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
     CONSTRUCTOR visibility:public <> (baz:com.javiersc.kotlin.kopy.playground.Baz, isValid:kotlin.Boolean) returnType:com.javiersc.kotlin.kopy.playground.Bar [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.copy' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Bar, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.copy' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Bar, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Bar, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Bar [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.invoke' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Bar, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.invoke' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Bar, $receiver:S of com.javiersc.kotlin.kopy.playground.Bar.set, other:S of com.javiersc.kotlin.kopy.playground.Bar.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -249,17 +249,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
           RETURN type=kotlin.Nothing from='public final fun <get-text> (): kotlin.String declared in com.javiersc.kotlin.kopy.playground.Baz'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:text type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.<get-text>' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Baz
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Baz) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Baz) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Baz
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
     CONSTRUCTOR visibility:public <> (qux:com.javiersc.kotlin.kopy.playground.Qux, text:kotlin.String) returnType:com.javiersc.kotlin.kopy.playground.Baz [primary]
@@ -283,7 +283,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
           p1: GET_VAR 'val tmp_3: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.copy' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Baz, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
               $this: GET_VAR 'val tmp_3: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.copy' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Baz, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Baz, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Baz [operator,infix]
       annotations:
@@ -300,7 +300,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
           p1: GET_VAR 'val tmp_4: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.invoke' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Baz, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
               $this: GET_VAR 'val tmp_4: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.invoke' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Baz, $receiver:S of com.javiersc.kotlin.kopy.playground.Baz.set, other:S of com.javiersc.kotlin.kopy.playground.Baz.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -473,17 +473,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
           RETURN type=kotlin.Nothing from='public final fun <get-letter> (): kotlin.Char declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:letter type:kotlin.Char visibility:private [final]' type=kotlin.Char origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-letter>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Foo
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Foo
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     CONSTRUCTOR visibility:public <> (bar:com.javiersc.kotlin.kopy.playground.Bar, letter:kotlin.Char) returnType:com.javiersc.kotlin.kopy.playground.Foo [primary]
@@ -507,7 +507,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
           p1: GET_VAR 'val tmp_6: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_6: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Foo [operator,infix]
       annotations:
@@ -524,7 +524,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
           p1: GET_VAR 'val tmp_7: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_7: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Foo, $receiver:S of com.javiersc.kotlin.kopy.playground.Foo.set, other:S of com.javiersc.kotlin.kopy.playground.Foo.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -686,17 +686,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
           RETURN type=kotlin.Nothing from='public final fun <get-number> (): kotlin.Int declared in com.javiersc.kotlin.kopy.playground.Qux'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:number type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux.<get-number>' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Qux
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Qux) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Qux) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Qux
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> declared in com.javiersc.kotlin.kopy.playground.Qux'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> declared in com.javiersc.kotlin.kopy.playground.Qux'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
     CONSTRUCTOR visibility:public <> (number:kotlin.Int) returnType:com.javiersc.kotlin.kopy.playground.Qux [primary]
@@ -719,7 +719,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
           p1: GET_VAR 'val tmp_9: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux.copy' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Qux, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> declared in com.javiersc.kotlin.kopy.playground.Qux' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> declared in com.javiersc.kotlin.kopy.playground.Qux' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> origin=null
               $this: GET_VAR 'val tmp_9: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux.copy' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Qux, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Qux, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Qux [operator,infix]
       annotations:
@@ -736,7 +736,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
           p1: GET_VAR 'val tmp_10: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux.invoke' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Qux, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> declared in com.javiersc.kotlin.kopy.playground.Qux' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> declared in com.javiersc.kotlin.kopy.playground.Qux' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Qux> origin=null
               $this: GET_VAR 'val tmp_10: com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux.invoke' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Qux, $receiver:S of com.javiersc.kotlin.kopy.playground.Qux.set, other:S of com.javiersc.kotlin.kopy.playground.Qux.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -895,29 +895,29 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/nest-copy-update.kt
                                 VALUE_PARAMETER name:it index:0 type:kotlin.Int
                                 BLOCK_BODY
                                   CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                     value: CALL 'public final fun copy (bar: com.javiersc.kotlin.kopy.playground.Bar, letter: kotlin.Char): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       bar: CALL 'public final fun copy (baz: com.javiersc.kotlin.kopy.playground.Baz, isValid: kotlin.Boolean): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
                                         $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                           $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                         baz: CALL 'public final fun copy (qux: com.javiersc.kotlin.kopy.playground.Qux, text: kotlin.String): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
                                           $this: CALL 'public final fun <get-baz> (): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Baz origin=GET_PROPERTY
                                             $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                           qux: CALL 'public final fun copy (number: kotlin.Int): com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Qux' type=com.javiersc.kotlin.kopy.playground.Qux origin=null
                                             $this: CALL 'public final fun <get-qux> (): com.javiersc.kotlin.kopy.playground.Qux declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Qux origin=GET_PROPERTY
                                               $this: CALL 'public final fun <get-baz> (): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Baz origin=GET_PROPERTY
                                                 $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                                   $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                             number: GET_VAR 'it: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>.<anonymous>' type=kotlin.Int origin=null
       VAR name:isOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/nest-copy-update.fir.txt b/kopy-compiler/test-data/box/nest-copy-update.fir.txt
index cb518d3..8f6d602 100644
--- a/kopy-compiler/test-data/box/nest-copy-update.fir.txt
+++ b/kopy-compiler/test-data/box/nest-copy-update.fir.txt
@@ -39,8 +39,8 @@ FILE: nest-copy-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -75,8 +75,8 @@ FILE: nest-copy-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -111,8 +111,8 @@ FILE: nest-copy-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -147,8 +147,8 @@ FILE: nest-copy-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/box/nested-copy/simple-1.fir.ir.txt b/kopy-compiler/test-data/box/nested-copy/simple-1.fir.ir.txt
index 34a88bf..747e0e6 100644
--- a/kopy-compiler/test-data/box/nested-copy/simple-1.fir.ir.txt
+++ b/kopy-compiler/test-data/box/nested-copy/simple-1.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/simple-1.kt
           RETURN type=kotlin.Nothing from='public final fun <get-letter> (): kotlin.Char declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:letter type:kotlin.Char visibility:private [final]' type=kotlin.Char origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-letter>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Foo
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Foo
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     CONSTRUCTOR visibility:public <> (number:kotlin.Int, letter:kotlin.Char) returnType:com.javiersc.kotlin.kopy.playground.Foo [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/simple-1.kt
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Foo [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/simple-1.kt
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Foo, $receiver:S of com.javiersc.kotlin.kopy.playground.Foo.set, other:S of com.javiersc.kotlin.kopy.playground.Foo.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -256,11 +256,11 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/simple-1.kt
                                   VALUE_PARAMETER name:it index:0 type:kotlin.Int
                                   BLOCK_BODY
                                     CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                                      $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                      $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                         $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       value: CALL 'public final fun copy (number: kotlin.Int, letter: kotlin.Char): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                         $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                          $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                          $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                             $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                         number: GET_VAR 'it: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>.<anonymous>' type=kotlin.Int origin=null
                 CALL 'public final fun set <S> (other: S of com.javiersc.kotlin.kopy.playground.Foo.set): kotlin.Unit declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlin.Unit origin=null
@@ -277,11 +277,11 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/simple-1.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.Int
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                             value: CALL 'public final fun copy (number: kotlin.Int, letter: kotlin.Char): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               number: GET_VAR 'it: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.Int origin=null
       VAR name:isOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/nested-copy/simple-1.fir.txt b/kopy-compiler/test-data/box/nested-copy/simple-1.fir.txt
index 4be69c2..d107c71 100644
--- a/kopy-compiler/test-data/box/nested-copy/simple-1.fir.txt
+++ b/kopy-compiler/test-data/box/nested-copy/simple-1.fir.txt
@@ -42,8 +42,8 @@ FILE: simple-1.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/box/no-nest-copy-set.fir.ir.txt b/kopy-compiler/test-data/box/no-nest-copy-set.fir.ir.txt
index 0f4613a..2bb3e4c 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-set.fir.ir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-set.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-set.kt
           RETURN type=kotlin.Nothing from='public final fun <get-letter> (): kotlin.Char declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:letter type:kotlin.Char visibility:private [final]' type=kotlin.Char origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-letter>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Foo
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Foo
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     CONSTRUCTOR visibility:public <> (number:kotlin.Int, letter:kotlin.Char) returnType:com.javiersc.kotlin.kopy.playground.Foo [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-set.kt
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Foo [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-set.kt
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Foo, $receiver:S of com.javiersc.kotlin.kopy.playground.Foo.set, other:S of com.javiersc.kotlin.kopy.playground.Foo.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -249,11 +249,11 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-set.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.Int
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                             value: CALL 'public final fun copy (number: kotlin.Int, letter: kotlin.Char): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               number: GET_VAR 'it: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.Int origin=null
       VAR name:isOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/no-nest-copy-set.fir.txt b/kopy-compiler/test-data/box/no-nest-copy-set.fir.txt
index 047f3d6..42d0bd2 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-set.fir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-set.fir.txt
@@ -38,8 +38,8 @@ FILE: no-nest-copy-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/box/no-nest-copy-update-each-no-it.fir.ir.txt b/kopy-compiler/test-data/box/no-nest-copy-update-each-no-it.fir.ir.txt
index 64eaceb..cb5a96b 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-update-each-no-it.fir.ir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-update-each-no-it.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-ea
           RETURN type=kotlin.Nothing from='public final fun <get-letters> (): kotlin.collections.List<kotlin.Char> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:letters type:kotlin.collections.List<kotlin.Char> visibility:private [final]' type=kotlin.collections.List<kotlin.Char> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-letters>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Foo
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Foo
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     CONSTRUCTOR visibility:public <> (numbers:kotlin.collections.List<kotlin.Int>, letters:kotlin.collections.List<kotlin.Char>) returnType:com.javiersc.kotlin.kopy.playground.Foo [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-ea
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Foo [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-ea
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Foo, $receiver:S of com.javiersc.kotlin.kopy.playground.Foo.set, other:S of com.javiersc.kotlin.kopy.playground.Foo.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -269,11 +269,11 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-ea
                                 VALUE_PARAMETER name:it index:0 type:kotlin.collections.List<kotlin.Int>
                                 BLOCK_BODY
                                   CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                     value: CALL 'public final fun copy (numbers: kotlin.collections.List<kotlin.Int>, letters: kotlin.collections.List<kotlin.Char>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       numbers: GET_VAR 'it: kotlin.collections.List<kotlin.Int> declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>.<anonymous>' type=kotlin.collections.List<kotlin.Int> origin=null
       VAR name:isOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/no-nest-copy-update-each-no-it.fir.txt b/kopy-compiler/test-data/box/no-nest-copy-update-each-no-it.fir.txt
index c0f133a..6e53d45 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-update-each-no-it.fir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-update-each-no-it.fir.txt
@@ -44,8 +44,8 @@ FILE: no-nest-copy-update-each-no-it.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/box/no-nest-copy-update-each-with-custom-parameter.fir.ir.txt b/kopy-compiler/test-data/box/no-nest-copy-update-each-with-custom-parameter.fir.ir.txt
index 6c43752..ded1dcc 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-update-each-with-custom-parameter.fir.ir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-update-each-with-custom-parameter.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-ea
           RETURN type=kotlin.Nothing from='public final fun <get-letters> (): kotlin.collections.List<kotlin.Char> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:letters type:kotlin.collections.List<kotlin.Char> visibility:private [final]' type=kotlin.collections.List<kotlin.Char> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-letters>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Foo
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Foo
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     CONSTRUCTOR visibility:public <> (numbers:kotlin.collections.List<kotlin.Int>, letters:kotlin.collections.List<kotlin.Char>) returnType:com.javiersc.kotlin.kopy.playground.Foo [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-ea
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Foo [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-ea
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Foo, $receiver:S of com.javiersc.kotlin.kopy.playground.Foo.set, other:S of com.javiersc.kotlin.kopy.playground.Foo.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -271,11 +271,11 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-ea
                                 VALUE_PARAMETER name:it index:0 type:kotlin.collections.List<kotlin.Int>
                                 BLOCK_BODY
                                   CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                     value: CALL 'public final fun copy (numbers: kotlin.collections.List<kotlin.Int>, letters: kotlin.collections.List<kotlin.Char>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       numbers: GET_VAR 'it: kotlin.collections.List<kotlin.Int> declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>.<anonymous>' type=kotlin.collections.List<kotlin.Int> origin=null
       VAR name:isOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/no-nest-copy-update-each-with-custom-parameter.fir.txt b/kopy-compiler/test-data/box/no-nest-copy-update-each-with-custom-parameter.fir.txt
index 6a8f2cc..5531d5d 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-update-each-with-custom-parameter.fir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-update-each-with-custom-parameter.fir.txt
@@ -41,8 +41,8 @@ FILE: no-nest-copy-update-each-with-custom-parameter.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/box/no-nest-copy-update-each-with-it.fir.ir.txt b/kopy-compiler/test-data/box/no-nest-copy-update-each-with-it.fir.ir.txt
index bb1af65..4d2e885 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-update-each-with-it.fir.ir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-update-each-with-it.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-ea
           RETURN type=kotlin.Nothing from='public final fun <get-letters> (): kotlin.collections.List<kotlin.Char> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:letters type:kotlin.collections.List<kotlin.Char> visibility:private [final]' type=kotlin.collections.List<kotlin.Char> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-letters>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Foo
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Foo
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     CONSTRUCTOR visibility:public <> (numbers:kotlin.collections.List<kotlin.Int>, letters:kotlin.collections.List<kotlin.Char>) returnType:com.javiersc.kotlin.kopy.playground.Foo [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-ea
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Foo [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-ea
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Foo, $receiver:S of com.javiersc.kotlin.kopy.playground.Foo.set, other:S of com.javiersc.kotlin.kopy.playground.Foo.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -271,11 +271,11 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-ea
                                 VALUE_PARAMETER name:it index:0 type:kotlin.collections.List<kotlin.Int>
                                 BLOCK_BODY
                                   CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                     value: CALL 'public final fun copy (numbers: kotlin.collections.List<kotlin.Int>, letters: kotlin.collections.List<kotlin.Char>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       numbers: GET_VAR 'it: kotlin.collections.List<kotlin.Int> declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>.<anonymous>' type=kotlin.collections.List<kotlin.Int> origin=null
       VAR name:isOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/no-nest-copy-update-each-with-it.fir.txt b/kopy-compiler/test-data/box/no-nest-copy-update-each-with-it.fir.txt
index 793a69d..faca1bd 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-update-each-with-it.fir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-update-each-with-it.fir.txt
@@ -41,8 +41,8 @@ FILE: no-nest-copy-update-each-with-it.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/box/no-nest-copy-update-no-it.fir.ir.txt b/kopy-compiler/test-data/box/no-nest-copy-update-no-it.fir.ir.txt
index 0181de2..953490f 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-update-no-it.fir.ir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-update-no-it.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-no
           RETURN type=kotlin.Nothing from='public final fun <get-letter> (): kotlin.Char declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:letter type:kotlin.Char visibility:private [final]' type=kotlin.Char origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-letter>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Foo
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Foo
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     CONSTRUCTOR visibility:public <> (number:kotlin.Int, letter:kotlin.Char) returnType:com.javiersc.kotlin.kopy.playground.Foo [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-no
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Foo [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-no
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Foo, $receiver:S of com.javiersc.kotlin.kopy.playground.Foo.set, other:S of com.javiersc.kotlin.kopy.playground.Foo.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -254,11 +254,11 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-no
                                 VALUE_PARAMETER name:it index:0 type:kotlin.Int
                                 BLOCK_BODY
                                   CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                     value: CALL 'public final fun copy (number: kotlin.Int, letter: kotlin.Char): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       number: GET_VAR 'it: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>.<anonymous>' type=kotlin.Int origin=null
       VAR name:isOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/no-nest-copy-update-no-it.fir.txt b/kopy-compiler/test-data/box/no-nest-copy-update-no-it.fir.txt
index 7d3bcb7..ca29ee9 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-update-no-it.fir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-update-no-it.fir.txt
@@ -41,8 +41,8 @@ FILE: no-nest-copy-update-no-it.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/box/no-nest-copy-update-with-custom-parameter.fir.ir.txt b/kopy-compiler/test-data/box/no-nest-copy-update-with-custom-parameter.fir.ir.txt
index d09527c..2dea3dc 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-update-with-custom-parameter.fir.ir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-update-with-custom-parameter.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-wi
           RETURN type=kotlin.Nothing from='public final fun <get-letter> (): kotlin.Char declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:letter type:kotlin.Char visibility:private [final]' type=kotlin.Char origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-letter>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Foo
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Foo
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     CONSTRUCTOR visibility:public <> (number:kotlin.Int, letter:kotlin.Char) returnType:com.javiersc.kotlin.kopy.playground.Foo [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-wi
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Foo [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-wi
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Foo, $receiver:S of com.javiersc.kotlin.kopy.playground.Foo.set, other:S of com.javiersc.kotlin.kopy.playground.Foo.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -256,11 +256,11 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-wi
                                 VALUE_PARAMETER name:it index:0 type:kotlin.Int
                                 BLOCK_BODY
                                   CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                     value: CALL 'public final fun copy (number: kotlin.Int, letter: kotlin.Char): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       number: GET_VAR 'it: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>.<anonymous>' type=kotlin.Int origin=null
       VAR name:isOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/no-nest-copy-update-with-custom-parameter.fir.txt b/kopy-compiler/test-data/box/no-nest-copy-update-with-custom-parameter.fir.txt
index dd274ef..9556c94 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-update-with-custom-parameter.fir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-update-with-custom-parameter.fir.txt
@@ -41,8 +41,8 @@ FILE: no-nest-copy-update-with-custom-parameter.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/box/no-nest-copy-update-with-it.fir.ir.txt b/kopy-compiler/test-data/box/no-nest-copy-update-with-it.fir.ir.txt
index 95cf2ac..d60d870 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-update-with-it.fir.ir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-update-with-it.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-wi
           RETURN type=kotlin.Nothing from='public final fun <get-letter> (): kotlin.Char declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:letter type:kotlin.Char visibility:private [final]' type=kotlin.Char origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-letter>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Foo
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Foo
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     CONSTRUCTOR visibility:public <> (number:kotlin.Int, letter:kotlin.Char) returnType:com.javiersc.kotlin.kopy.playground.Foo [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-wi
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Foo [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-wi
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Foo, $receiver:S of com.javiersc.kotlin.kopy.playground.Foo.set, other:S of com.javiersc.kotlin.kopy.playground.Foo.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -256,11 +256,11 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-copy-update-wi
                                 VALUE_PARAMETER name:it index:0 type:kotlin.Int
                                 BLOCK_BODY
                                   CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                     value: CALL 'public final fun copy (number: kotlin.Int, letter: kotlin.Char): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                       number: GET_VAR 'it: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>.<anonymous>' type=kotlin.Int origin=null
       VAR name:isOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/no-nest-copy-update-with-it.fir.txt b/kopy-compiler/test-data/box/no-nest-copy-update-with-it.fir.txt
index 6be77c5..61e6cdf 100644
--- a/kopy-compiler/test-data/box/no-nest-copy-update-with-it.fir.txt
+++ b/kopy-compiler/test-data/box/no-nest-copy-update-with-it.fir.txt
@@ -41,8 +41,8 @@ FILE: no-nest-copy-update-with-it.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/box/repeated-properties/complex-1.fir.ir.txt b/kopy-compiler/test-data/box/repeated-properties/complex-1.fir.ir.txt
index ad2ade8..855fab9 100644
--- a/kopy-compiler/test-data/box/repeated-properties/complex-1.fir.ir.txt
+++ b/kopy-compiler/test-data/box/repeated-properties/complex-1.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
           RETURN type=kotlin.Nothing from='public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Bar'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:quz type:com.javiersc.kotlin.kopy.playground.Quz visibility:private [final]' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.<get-quz>' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Bar
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Bar) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Bar) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Bar
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
     CONSTRUCTOR visibility:public <> (baz:com.javiersc.kotlin.kopy.playground.Baz, quz:com.javiersc.kotlin.kopy.playground.Quz) returnType:com.javiersc.kotlin.kopy.playground.Bar [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.copy' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Bar, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.copy' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Bar, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Bar, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Bar [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.invoke' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Bar, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.invoke' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Bar, $receiver:S of com.javiersc.kotlin.kopy.playground.Bar.set, other:S of com.javiersc.kotlin.kopy.playground.Bar.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -249,17 +249,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
           RETURN type=kotlin.Nothing from='public final fun <get-number> (): kotlin.Int declared in com.javiersc.kotlin.kopy.playground.Baz'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:number type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.<get-number>' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Baz
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Baz) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Baz) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Baz
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
     CONSTRUCTOR visibility:public <> (quz:com.javiersc.kotlin.kopy.playground.Quz, number:kotlin.Int) returnType:com.javiersc.kotlin.kopy.playground.Baz [primary]
@@ -283,7 +283,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
           p1: GET_VAR 'val tmp_3: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.copy' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Baz, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
               $this: GET_VAR 'val tmp_3: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.copy' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Baz, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Baz, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Baz [operator,infix]
       annotations:
@@ -300,7 +300,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
           p1: GET_VAR 'val tmp_4: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.invoke' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Baz, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
               $this: GET_VAR 'val tmp_4: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.invoke' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Baz, $receiver:S of com.javiersc.kotlin.kopy.playground.Baz.set, other:S of com.javiersc.kotlin.kopy.playground.Baz.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -484,17 +484,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
           RETURN type=kotlin.Nothing from='public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:quz type:com.javiersc.kotlin.kopy.playground.Quz visibility:private [final]' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-quz>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Foo
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Foo
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     CONSTRUCTOR visibility:public <> (bar:com.javiersc.kotlin.kopy.playground.Bar, baz:com.javiersc.kotlin.kopy.playground.Baz, quz:com.javiersc.kotlin.kopy.playground.Quz) returnType:com.javiersc.kotlin.kopy.playground.Foo [primary]
@@ -519,7 +519,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
           p1: GET_VAR 'val tmp_6: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_6: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Foo [operator,infix]
       annotations:
@@ -536,7 +536,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
           p1: GET_VAR 'val tmp_7: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_7: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Foo, $receiver:S of com.javiersc.kotlin.kopy.playground.Foo.set, other:S of com.javiersc.kotlin.kopy.playground.Foo.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -731,17 +731,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
           RETURN type=kotlin.Nothing from='public final fun <get-text> (): kotlin.String declared in com.javiersc.kotlin.kopy.playground.Quz'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:text type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz.<get-text>' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Quz
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Quz) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Quz) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Quz
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> declared in com.javiersc.kotlin.kopy.playground.Quz'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> declared in com.javiersc.kotlin.kopy.playground.Quz'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
     CONSTRUCTOR visibility:public <> (text:kotlin.String) returnType:com.javiersc.kotlin.kopy.playground.Quz [primary]
@@ -764,7 +764,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
           p1: GET_VAR 'val tmp_9: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz.copy' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Quz, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> declared in com.javiersc.kotlin.kopy.playground.Quz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> declared in com.javiersc.kotlin.kopy.playground.Quz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> origin=null
               $this: GET_VAR 'val tmp_9: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz.copy' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Quz, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Quz, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Quz [operator,infix]
       annotations:
@@ -781,7 +781,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
           p1: GET_VAR 'val tmp_10: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz.invoke' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Quz, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> declared in com.javiersc.kotlin.kopy.playground.Quz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> declared in com.javiersc.kotlin.kopy.playground.Quz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> origin=null
               $this: GET_VAR 'val tmp_10: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz.invoke' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Quz, $receiver:S of com.javiersc.kotlin.kopy.playground.Quz.set, other:S of com.javiersc.kotlin.kopy.playground.Quz.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -933,22 +933,22 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.String
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                             value: CALL 'public final fun copy (bar: com.javiersc.kotlin.kopy.playground.Bar, baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               bar: CALL 'public final fun copy (baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
                                 $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                   $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                 quz: CALL 'public final fun copy (text: kotlin.String): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
                                   $this: CALL 'public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Quz origin=GET_PROPERTY
                                     $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                   text: GET_VAR 'it: kotlin.String declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.String origin=null
                 CALL 'public final fun set <S> (other: S of com.javiersc.kotlin.kopy.playground.Foo.set): kotlin.Unit declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlin.Unit origin=null
@@ -965,16 +965,16 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.String
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                             value: CALL 'public final fun copy (bar: com.javiersc.kotlin.kopy.playground.Bar, baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               quz: CALL 'public final fun copy (text: kotlin.String): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
                                 $this: CALL 'public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Quz origin=GET_PROPERTY
                                   $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                 text: GET_VAR 'it: kotlin.String declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.String origin=null
                 CALL 'public final fun set <S> (other: S of com.javiersc.kotlin.kopy.playground.Foo.set): kotlin.Unit declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlin.Unit origin=null
@@ -993,29 +993,29 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-1.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.String
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                             value: CALL 'public final fun copy (bar: com.javiersc.kotlin.kopy.playground.Bar, baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               bar: CALL 'public final fun copy (baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
                                 $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                   $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                 baz: CALL 'public final fun copy (quz: com.javiersc.kotlin.kopy.playground.Quz, number: kotlin.Int): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
                                   $this: CALL 'public final fun <get-baz> (): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Baz origin=GET_PROPERTY
                                     $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                   quz: CALL 'public final fun copy (text: kotlin.String): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
                                     $this: CALL 'public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Quz origin=GET_PROPERTY
                                       $this: CALL 'public final fun <get-baz> (): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Baz origin=GET_PROPERTY
                                         $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                           $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                     text: GET_VAR 'it: kotlin.String declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.String origin=null
       VAR name:isOneOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/repeated-properties/complex-1.fir.txt b/kopy-compiler/test-data/box/repeated-properties/complex-1.fir.txt
index ee2a625..3675e03 100644
--- a/kopy-compiler/test-data/box/repeated-properties/complex-1.fir.txt
+++ b/kopy-compiler/test-data/box/repeated-properties/complex-1.fir.txt
@@ -42,8 +42,8 @@ FILE: complex-1.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Quz>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Quz>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Quz>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Quz>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -78,8 +78,8 @@ FILE: complex-1.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -114,8 +114,8 @@ FILE: complex-1.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -164,8 +164,8 @@ FILE: complex-1.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionInvoke|() public final operator infix fun invoke(copy: R|com/javiersc/kotlin/kopy/playground/Foo.() -> kotlin/Unit|): R|com/javiersc/kotlin/kopy/playground/Foo| {
         }
diff --git a/kopy-compiler/test-data/box/repeated-properties/complex-2.fir.ir.txt b/kopy-compiler/test-data/box/repeated-properties/complex-2.fir.ir.txt
index 720bc5f..573676b 100644
--- a/kopy-compiler/test-data/box/repeated-properties/complex-2.fir.ir.txt
+++ b/kopy-compiler/test-data/box/repeated-properties/complex-2.fir.ir.txt
@@ -25,17 +25,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
           RETURN type=kotlin.Nothing from='public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Bar'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:quz type:com.javiersc.kotlin.kopy.playground.Quz visibility:private [final]' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.<get-quz>' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Bar
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Bar) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Bar) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Bar
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
     CONSTRUCTOR visibility:public <> (baz:com.javiersc.kotlin.kopy.playground.Baz, quz:com.javiersc.kotlin.kopy.playground.Quz) returnType:com.javiersc.kotlin.kopy.playground.Bar [primary]
@@ -59,7 +59,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
           p1: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.copy' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Bar, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
               $this: GET_VAR 'val tmp_0: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.copy' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Bar, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Bar, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Bar [operator,infix]
       annotations:
@@ -76,7 +76,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
           p1: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.invoke' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Bar, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> declared in com.javiersc.kotlin.kopy.playground.Bar' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Bar> origin=null
               $this: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar.invoke' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Bar, $receiver:S of com.javiersc.kotlin.kopy.playground.Bar.set, other:S of com.javiersc.kotlin.kopy.playground.Bar.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -249,17 +249,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
           RETURN type=kotlin.Nothing from='public final fun <get-number> (): kotlin.Int declared in com.javiersc.kotlin.kopy.playground.Baz'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:number type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.<get-number>' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Baz
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Baz) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Baz) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Baz
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
     CONSTRUCTOR visibility:public <> (quz:com.javiersc.kotlin.kopy.playground.Quz, number:kotlin.Int) returnType:com.javiersc.kotlin.kopy.playground.Baz [primary]
@@ -283,7 +283,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
           p1: GET_VAR 'val tmp_3: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.copy' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Baz, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
               $this: GET_VAR 'val tmp_3: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.copy' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Baz, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Baz, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Baz [operator,infix]
       annotations:
@@ -300,7 +300,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
           p1: GET_VAR 'val tmp_4: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.invoke' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Baz, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> declared in com.javiersc.kotlin.kopy.playground.Baz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Baz> origin=null
               $this: GET_VAR 'val tmp_4: com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz.invoke' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Baz, $receiver:S of com.javiersc.kotlin.kopy.playground.Baz.set, other:S of com.javiersc.kotlin.kopy.playground.Baz.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -484,17 +484,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
           RETURN type=kotlin.Nothing from='public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:quz type:com.javiersc.kotlin.kopy.playground.Quz visibility:private [final]' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-quz>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Foo
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Foo
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     CONSTRUCTOR visibility:public <> (bar:com.javiersc.kotlin.kopy.playground.Bar, baz:com.javiersc.kotlin.kopy.playground.Baz, quz:com.javiersc.kotlin.kopy.playground.Quz) returnType:com.javiersc.kotlin.kopy.playground.Foo [primary]
@@ -519,7 +519,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
           p1: GET_VAR 'val tmp_6: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_6: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.copy' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Foo, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Foo [operator,infix]
       annotations:
@@ -536,7 +536,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
           p1: GET_VAR 'val tmp_7: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Foo, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=null
               $this: GET_VAR 'val tmp_7: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo.invoke' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Foo, $receiver:S of com.javiersc.kotlin.kopy.playground.Foo.set, other:S of com.javiersc.kotlin.kopy.playground.Foo.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -731,17 +731,17 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
           RETURN type=kotlin.Nothing from='public final fun <get-text> (): kotlin.String declared in com.javiersc.kotlin.kopy.playground.Quz'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:text type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz.<get-text>' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
-    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+    PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
       FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> visibility:private [final]
         EXPRESSION_BODY
           CALL 'public final fun atomic <T> (initial: T of kotlinx.atomicfu.atomic): kotlinx.atomicfu.AtomicRef<T of kotlinx.atomicfu.atomic> declared in kotlinx.atomicfu' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> origin=null
             <T>: com.javiersc.kotlin.kopy.playground.Quz
             initial: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
-      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Quz) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz>
-        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:public modality:FINAL [val]
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-_atomic> visibility:internal modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Quz) returnType:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz>
+        correspondingProperty: PROPERTY GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:_atomic visibility:internal modality:FINAL [val]
         $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.Quz
         BLOCK_BODY
-          RETURN type=kotlin.Nothing from='public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> declared in com.javiersc.kotlin.kopy.playground.Quz'
+          RETURN type=kotlin.Nothing from='internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> declared in com.javiersc.kotlin.kopy.playground.Quz'
             GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:_atomic type:kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> visibility:private [final]' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> origin=null
               receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz.<get-_atomic>' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
     CONSTRUCTOR visibility:public <> (text:kotlin.String) returnType:com.javiersc.kotlin.kopy.playground.Quz [primary]
@@ -764,7 +764,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
           p1: GET_VAR 'val tmp_9: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz.copy' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
         RETURN type=kotlin.Nothing from='public final fun copy (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Quz, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> declared in com.javiersc.kotlin.kopy.playground.Quz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> declared in com.javiersc.kotlin.kopy.playground.Quz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> origin=null
               $this: GET_VAR 'val tmp_9: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz.copy' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:invoke visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.Quz, copy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Quz, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.Quz [operator,infix]
       annotations:
@@ -781,7 +781,7 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
           p1: GET_VAR 'val tmp_10: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz.invoke' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
         RETURN type=kotlin.Nothing from='public final fun invoke (copy: @[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.Quz, kotlin.Unit>): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz'
           CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=T of kotlinx.atomicfu.AtomicRef origin=null
-            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> declared in com.javiersc.kotlin.kopy.playground.Quz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> origin=null
+            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> declared in com.javiersc.kotlin.kopy.playground.Quz' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Quz> origin=null
               $this: GET_VAR 'val tmp_10: com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz.invoke' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
     FUN GENERATED[com.javiersc.kotlin.kopy.compiler.fir.Key] name:set visibility:public modality:FINAL <S> ($this:com.javiersc.kotlin.kopy.playground.Quz, $receiver:S of com.javiersc.kotlin.kopy.playground.Quz.set, other:S of com.javiersc.kotlin.kopy.playground.Quz.set) returnType:kotlin.Unit [infix]
       annotations:
@@ -933,22 +933,22 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.String
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                             value: CALL 'public final fun copy (bar: com.javiersc.kotlin.kopy.playground.Bar, baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               bar: CALL 'public final fun copy (baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
                                 $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                   $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                 quz: CALL 'public final fun copy (text: kotlin.String): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
                                   $this: CALL 'public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Quz origin=GET_PROPERTY
                                     $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                   text: GET_VAR 'it: kotlin.String declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.String origin=null
                 CALL 'public final fun set <S> (other: S of com.javiersc.kotlin.kopy.playground.Foo.set): kotlin.Unit declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlin.Unit origin=null
@@ -965,16 +965,16 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.String
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                             value: CALL 'public final fun copy (bar: com.javiersc.kotlin.kopy.playground.Bar, baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               quz: CALL 'public final fun copy (text: kotlin.String): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
                                 $this: CALL 'public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Quz origin=GET_PROPERTY
                                   $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                 text: GET_VAR 'it: kotlin.String declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.String origin=null
                 CALL 'public final fun set <S> (other: S of com.javiersc.kotlin.kopy.playground.Foo.set): kotlin.Unit declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlin.Unit origin=null
@@ -993,29 +993,29 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.String
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                             value: CALL 'public final fun copy (bar: com.javiersc.kotlin.kopy.playground.Bar, baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               bar: CALL 'public final fun copy (baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
                                 $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                   $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                 baz: CALL 'public final fun copy (quz: com.javiersc.kotlin.kopy.playground.Quz, number: kotlin.Int): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
                                   $this: CALL 'public final fun <get-baz> (): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Baz origin=GET_PROPERTY
                                     $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                   quz: CALL 'public final fun copy (text: kotlin.String): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
                                     $this: CALL 'public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Quz origin=GET_PROPERTY
                                       $this: CALL 'public final fun <get-baz> (): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Baz origin=GET_PROPERTY
                                         $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                           $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                     text: GET_VAR 'it: kotlin.String declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.String origin=null
                 CALL 'public final fun set <S> (other: S of com.javiersc.kotlin.kopy.playground.Foo.set): kotlin.Unit declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlin.Unit origin=null
@@ -1033,22 +1033,22 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.String
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                             value: CALL 'public final fun copy (bar: com.javiersc.kotlin.kopy.playground.Bar, baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               bar: CALL 'public final fun copy (baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
                                 $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                   $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                 quz: CALL 'public final fun copy (text: kotlin.String): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
                                   $this: CALL 'public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Quz origin=GET_PROPERTY
                                     $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                   text: GET_VAR 'it: kotlin.String declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.String origin=null
                 CALL 'public final fun set <S> (other: S of com.javiersc.kotlin.kopy.playground.Foo.set): kotlin.Unit declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlin.Unit origin=null
@@ -1065,16 +1065,16 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.String
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                             value: CALL 'public final fun copy (bar: com.javiersc.kotlin.kopy.playground.Bar, baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               quz: CALL 'public final fun copy (text: kotlin.String): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
                                 $this: CALL 'public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Quz origin=GET_PROPERTY
                                   $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                 text: GET_VAR 'it: kotlin.String declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.String origin=null
                 CALL 'public final fun set <S> (other: S of com.javiersc.kotlin.kopy.playground.Foo.set): kotlin.Unit declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlin.Unit origin=null
@@ -1093,29 +1093,29 @@ FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/complex-2.kt
                         VALUE_PARAMETER name:it index:0 type:kotlin.String
                         BLOCK_BODY
                           CALL 'public final fun lazySet (value: T of kotlinx.atomicfu.AtomicRef): kotlin.Unit declared in kotlinx.atomicfu.AtomicRef' type=kotlin.Unit origin=null
-                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                             value: CALL 'public final fun copy (bar: com.javiersc.kotlin.kopy.playground.Bar, baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                   $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                               bar: CALL 'public final fun copy (baz: com.javiersc.kotlin.kopy.playground.Baz, quz: com.javiersc.kotlin.kopy.playground.Quz): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Bar origin=null
                                 $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                   $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                    $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                    $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                       $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                 baz: CALL 'public final fun copy (quz: com.javiersc.kotlin.kopy.playground.Quz, number: kotlin.Int): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Baz origin=null
                                   $this: CALL 'public final fun <get-baz> (): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Baz origin=GET_PROPERTY
                                     $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                       $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                        $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                        $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                           $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                   quz: CALL 'public final fun copy (text: kotlin.String): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Quz' type=com.javiersc.kotlin.kopy.playground.Quz origin=null
                                     $this: CALL 'public final fun <get-quz> (): com.javiersc.kotlin.kopy.playground.Quz declared in com.javiersc.kotlin.kopy.playground.Baz' type=com.javiersc.kotlin.kopy.playground.Quz origin=GET_PROPERTY
                                       $this: CALL 'public final fun <get-baz> (): com.javiersc.kotlin.kopy.playground.Baz declared in com.javiersc.kotlin.kopy.playground.Bar' type=com.javiersc.kotlin.kopy.playground.Baz origin=GET_PROPERTY
                                         $this: CALL 'public final fun <get-bar> (): com.javiersc.kotlin.kopy.playground.Bar declared in com.javiersc.kotlin.kopy.playground.Foo' type=com.javiersc.kotlin.kopy.playground.Bar origin=GET_PROPERTY
                                           $this: CALL 'public final fun <get-value> (): T of kotlinx.atomicfu.AtomicRef declared in kotlinx.atomicfu.AtomicRef' type=com.javiersc.kotlin.kopy.playground.Foo origin=GET_PROPERTY
-                                            $this: CALL 'public final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
+                                            $this: CALL 'internal final fun <get-_atomic> (): kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> declared in com.javiersc.kotlin.kopy.playground.Foo' type=kotlinx.atomicfu.AtomicRef<com.javiersc.kotlin.kopy.playground.Foo> origin=GET_PROPERTY
                                               $this: GET_VAR '$this$copy: com.javiersc.kotlin.kopy.playground.Foo declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.Foo origin=null
                                     text: GET_VAR 'it: kotlin.String declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.String origin=null
       VAR name:isOneOk type:kotlin.Boolean [val]
diff --git a/kopy-compiler/test-data/box/repeated-properties/complex-2.fir.txt b/kopy-compiler/test-data/box/repeated-properties/complex-2.fir.txt
index f72812d..277aace 100644
--- a/kopy-compiler/test-data/box/repeated-properties/complex-2.fir.txt
+++ b/kopy-compiler/test-data/box/repeated-properties/complex-2.fir.txt
@@ -45,8 +45,8 @@ FILE: complex-2.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Quz>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Quz>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Quz>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Quz>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -81,8 +81,8 @@ FILE: complex-2.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -117,8 +117,8 @@ FILE: complex-2.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -167,8 +167,8 @@ FILE: complex-2.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionInvoke|() public final operator infix fun invoke(copy: R|com/javiersc/kotlin/kopy/playground/Foo.() -> kotlin/Unit|): R|com/javiersc/kotlin/kopy/playground/Foo| {
         }
diff --git a/kopy-compiler/test-data/diagnostics-kopy-functions/all/all.fir.txt b/kopy-compiler/test-data/diagnostics-kopy-functions/all/all.fir.txt
index 3e23a10..63b4718 100644
--- a/kopy-compiler/test-data/diagnostics-kopy-functions/all/all.fir.txt
+++ b/kopy-compiler/test-data/diagnostics-kopy-functions/all/all.fir.txt
@@ -21,8 +21,8 @@ FILE: all.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics-kopy-functions/copy/copy.fir.txt b/kopy-compiler/test-data/diagnostics-kopy-functions/copy/copy.fir.txt
index b2c56aa..bc9dc43 100644
--- a/kopy-compiler/test-data/diagnostics-kopy-functions/copy/copy.fir.txt
+++ b/kopy-compiler/test-data/diagnostics-kopy-functions/copy/copy.fir.txt
@@ -21,8 +21,8 @@ FILE: copy.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics-kopy-functions/invoke/invoke.fir.txt b/kopy-compiler/test-data/diagnostics-kopy-functions/invoke/invoke.fir.txt
index b2439ae..a8e970f 100644
--- a/kopy-compiler/test-data/diagnostics-kopy-functions/invoke/invoke.fir.txt
+++ b/kopy-compiler/test-data/diagnostics-kopy-functions/invoke/invoke.fir.txt
@@ -21,8 +21,8 @@ FILE: invoke.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics-kopy-visibility/0_auto/public.fir.txt b/kopy-compiler/test-data/diagnostics-kopy-visibility/0_auto/public.fir.txt
index d97ef7c..3ad09a9 100644
--- a/kopy-compiler/test-data/diagnostics-kopy-visibility/0_auto/public.fir.txt
+++ b/kopy-compiler/test-data/diagnostics-kopy-visibility/0_auto/public.fir.txt
@@ -33,8 +33,8 @@ FILE: public.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -69,8 +69,8 @@ FILE: public.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo2>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo2>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo2>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo2>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics-kopy-visibility/1_public/public.fir.txt b/kopy-compiler/test-data/diagnostics-kopy-visibility/1_public/public.fir.txt
index d97ef7c..3ad09a9 100644
--- a/kopy-compiler/test-data/diagnostics-kopy-visibility/1_public/public.fir.txt
+++ b/kopy-compiler/test-data/diagnostics-kopy-visibility/1_public/public.fir.txt
@@ -33,8 +33,8 @@ FILE: public.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -69,8 +69,8 @@ FILE: public.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo2>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo2>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo2>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo2>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/invalid-call-chain/simple-deep-invalid-call-chain-deep-set.fir.txt b/kopy-compiler/test-data/diagnostics/invalid-call-chain/simple-deep-invalid-call-chain-deep-set.fir.txt
index 7c4cdb2..c628379 100644
--- a/kopy-compiler/test-data/diagnostics/invalid-call-chain/simple-deep-invalid-call-chain-deep-set.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/invalid-call-chain/simple-deep-invalid-call-chain-deep-set.fir.txt
@@ -44,8 +44,8 @@ FILE: simple-deep-invalid-call-chain-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -80,8 +80,8 @@ FILE: simple-deep-invalid-call-chain-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -116,8 +116,8 @@ FILE: simple-deep-invalid-call-chain-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -152,8 +152,8 @@ FILE: simple-deep-invalid-call-chain-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/invalid-call-chain/simple-deep-invalid-call-chain-deep-update-each.fir.txt b/kopy-compiler/test-data/diagnostics/invalid-call-chain/simple-deep-invalid-call-chain-deep-update-each.fir.txt
index f18b51f..669999d 100644
--- a/kopy-compiler/test-data/diagnostics/invalid-call-chain/simple-deep-invalid-call-chain-deep-update-each.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/invalid-call-chain/simple-deep-invalid-call-chain-deep-update-each.fir.txt
@@ -56,8 +56,8 @@ FILE: simple-deep-invalid-call-chain-deep-update-each.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -92,8 +92,8 @@ FILE: simple-deep-invalid-call-chain-deep-update-each.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -128,8 +128,8 @@ FILE: simple-deep-invalid-call-chain-deep-update-each.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -164,8 +164,8 @@ FILE: simple-deep-invalid-call-chain-deep-update-each.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/invalid-call-chain/simple-deep-invalid-call-chain-deep-update.fir.txt b/kopy-compiler/test-data/diagnostics/invalid-call-chain/simple-deep-invalid-call-chain-deep-update.fir.txt
index 5a0b1c3..da504a0 100644
--- a/kopy-compiler/test-data/diagnostics/invalid-call-chain/simple-deep-invalid-call-chain-deep-update.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/invalid-call-chain/simple-deep-invalid-call-chain-deep-update.fir.txt
@@ -56,8 +56,8 @@ FILE: simple-deep-invalid-call-chain-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -92,8 +92,8 @@ FILE: simple-deep-invalid-call-chain-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -128,8 +128,8 @@ FILE: simple-deep-invalid-call-chain-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -164,8 +164,8 @@ FILE: simple-deep-invalid-call-chain-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/missing-data-class/multiple-scenarios-in-a-row.fir.txt b/kopy-compiler/test-data/diagnostics/missing-data-class/multiple-scenarios-in-a-row.fir.txt
index 19863c3..32dd201 100644
--- a/kopy-compiler/test-data/diagnostics/missing-data-class/multiple-scenarios-in-a-row.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/missing-data-class/multiple-scenarios-in-a-row.fir.txt
@@ -95,8 +95,8 @@ FILE: multiple-scenarios-in-a-row.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -143,8 +143,8 @@ FILE: multiple-scenarios-in-a-row.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -179,8 +179,8 @@ FILE: multiple-scenarios-in-a-row.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-missing-and-deep-set-and-valid-set.fir.txt b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-missing-and-deep-set-and-valid-set.fir.txt
index 9c9ce6a..ea61563 100644
--- a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-missing-and-deep-set-and-valid-set.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-missing-and-deep-set-and-valid-set.fir.txt
@@ -27,8 +27,8 @@ FILE: simple-1-level-deep-missing-and-deep-set-and-valid-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -75,8 +75,8 @@ FILE: simple-1-level-deep-missing-and-deep-set-and-valid-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -111,8 +111,8 @@ FILE: simple-1-level-deep-missing-and-deep-set-and-valid-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-missing-and-deep-set.fir.txt b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-missing-and-deep-set.fir.txt
index 96a677f..edfe74e 100644
--- a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-missing-and-deep-set.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-missing-and-deep-set.fir.txt
@@ -26,8 +26,8 @@ FILE: simple-1-level-deep-missing-and-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -74,8 +74,8 @@ FILE: simple-1-level-deep-missing-and-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -110,8 +110,8 @@ FILE: simple-1-level-deep-missing-and-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-missing-and-deep-update.fir.txt b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-missing-and-deep-update.fir.txt
index 417d52d..57d774c 100644
--- a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-missing-and-deep-update.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-missing-and-deep-update.fir.txt
@@ -77,8 +77,8 @@ FILE: simple-1-level-deep-missing-and-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-set.fir.txt b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-set.fir.txt
index 365d4d9..3acf173 100644
--- a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-set.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-set.fir.txt
@@ -26,8 +26,8 @@ FILE: simple-1-level-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -74,8 +74,8 @@ FILE: simple-1-level-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -110,8 +110,8 @@ FILE: simple-1-level-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-update-each.fir.txt b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-update-each.fir.txt
index 5e59d78..6868e36 100644
--- a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-update-each.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-update-each.fir.txt
@@ -29,8 +29,8 @@ FILE: simple-1-level-deep-update-each.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -77,8 +77,8 @@ FILE: simple-1-level-deep-update-each.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -113,8 +113,8 @@ FILE: simple-1-level-deep-update-each.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-update.fir.txt b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-update.fir.txt
index 104affe..52b5618 100644
--- a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-update.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-1-level-deep-update.fir.txt
@@ -29,8 +29,8 @@ FILE: simple-1-level-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -77,8 +77,8 @@ FILE: simple-1-level-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -113,8 +113,8 @@ FILE: simple-1-level-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-deep-set.fir.txt b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-deep-set.fir.txt
index 7480635..96d0830 100644
--- a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-deep-set.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-deep-set.fir.txt
@@ -26,8 +26,8 @@ FILE: simple-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -74,8 +74,8 @@ FILE: simple-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -110,8 +110,8 @@ FILE: simple-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-deep-update.fir.txt b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-deep-update.fir.txt
index b0adab8..3ed1625 100644
--- a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-deep-update.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-deep-update.fir.txt
@@ -29,8 +29,8 @@ FILE: simple-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -77,8 +77,8 @@ FILE: simple-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -113,8 +113,8 @@ FILE: simple-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-multiple-deep-set.fir.txt b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-multiple-deep-set.fir.txt
index 69d2b06..3cf2344 100644
--- a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-multiple-deep-set.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-multiple-deep-set.fir.txt
@@ -29,8 +29,8 @@ FILE: simple-multiple-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-multiple-deep-update-each.fir.txt b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-multiple-deep-update-each.fir.txt
index 000a272..1a61798 100644
--- a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-multiple-deep-update-each.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-multiple-deep-update-each.fir.txt
@@ -35,8 +35,8 @@ FILE: simple-multiple-deep-update-each.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-multiple-deep-update.fir.txt b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-multiple-deep-update.fir.txt
index b666f20..a8d6bba 100644
--- a/kopy-compiler/test-data/diagnostics/missing-data-class/simple-multiple-deep-update.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/missing-data-class/simple-multiple-deep-update.fir.txt
@@ -35,8 +35,8 @@ FILE: simple-multiple-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-copy-scope-deep-set.fir.txt b/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-copy-scope-deep-set.fir.txt
index 6549e64..1b36dc8 100644
--- a/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-copy-scope-deep-set.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-copy-scope-deep-set.fir.txt
@@ -80,8 +80,8 @@ FILE: simple-no-copy-scope-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-copy-scope-deep-update-each.fir.txt b/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-copy-scope-deep-update-each.fir.txt
index 87e2a70..05b02f8 100644
--- a/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-copy-scope-deep-update-each.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-copy-scope-deep-update-each.fir.txt
@@ -83,8 +83,8 @@ FILE: simple-no-copy-scope-deep-update-each.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-copy-scope-deep-update.fir.txt b/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-copy-scope-deep-update.fir.txt
index 866c99a..b0f3a32 100644
--- a/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-copy-scope-deep-update.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-copy-scope-deep-update.fir.txt
@@ -83,8 +83,8 @@ FILE: simple-no-copy-scope-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-immediate-copy-scope-deep-set.fir.txt b/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-immediate-copy-scope-deep-set.fir.txt
index 84b1e16..13a8087 100644
--- a/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-immediate-copy-scope-deep-set.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-immediate-copy-scope-deep-set.fir.txt
@@ -94,8 +94,8 @@ FILE: simple-no-immediate-copy-scope-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-immediate-copy-scope-deep-update-each.fir.txt b/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-immediate-copy-scope-deep-update-each.fir.txt
index 48ca181..1157a79 100644
--- a/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-immediate-copy-scope-deep-update-each.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-immediate-copy-scope-deep-update-each.fir.txt
@@ -103,8 +103,8 @@ FILE: simple-no-immediate-copy-scope-deep-update-each.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-immediate-copy-scope-deep-update.fir.txt b/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-immediate-copy-scope-deep-update.fir.txt
index c5ab5d1..c3893ae 100644
--- a/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-immediate-copy-scope-deep-update.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/no-copy-scope/simple-no-immediate-copy-scope-deep-update.fir.txt
@@ -103,8 +103,8 @@ FILE: simple-no-immediate-copy-scope-deep-update.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/type-error/type-error.fir.txt b/kopy-compiler/test-data/diagnostics/type-error/type-error.fir.txt
index 2249102..3e53429 100644
--- a/kopy-compiler/test-data/diagnostics/type-error/type-error.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/type-error/type-error.fir.txt
@@ -48,8 +48,8 @@ FILE: type-error.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/valid/multiple-scenarios-in-a-row.fir.txt b/kopy-compiler/test-data/diagnostics/valid/multiple-scenarios-in-a-row.fir.txt
index 509db08..82a885f 100644
--- a/kopy-compiler/test-data/diagnostics/valid/multiple-scenarios-in-a-row.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/valid/multiple-scenarios-in-a-row.fir.txt
@@ -124,8 +124,8 @@ FILE: multiple-scenarios-in-a-row.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Qux>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -174,8 +174,8 @@ FILE: multiple-scenarios-in-a-row.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Baz>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionInvoke|() public final operator infix fun invoke(copy: R|com/javiersc/kotlin/kopy/playground/Baz.() -> kotlin/Unit|): R|com/javiersc/kotlin/kopy/playground/Baz| {
         }
@@ -215,8 +215,8 @@ FILE: multiple-scenarios-in-a-row.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionInvoke|() public final operator infix fun invoke(copy: R|com/javiersc/kotlin/kopy/playground/Bar.() -> kotlin/Unit|): R|com/javiersc/kotlin/kopy/playground/Bar| {
         }
@@ -256,8 +256,8 @@ FILE: multiple-scenarios-in-a-row.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionInvoke|() public final operator infix fun invoke(copy: R|com/javiersc/kotlin/kopy/playground/Foo.() -> kotlin/Unit|): R|com/javiersc/kotlin/kopy/playground/Foo| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/valid/simple-copy-update-custom-parameter.fir.txt b/kopy-compiler/test-data/diagnostics/valid/simple-copy-update-custom-parameter.fir.txt
index 7fa92de..64a6863 100644
--- a/kopy-compiler/test-data/diagnostics/valid/simple-copy-update-custom-parameter.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/valid/simple-copy-update-custom-parameter.fir.txt
@@ -31,8 +31,8 @@ FILE: simple-copy-update-custom-parameter.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/valid/simple-copy-update-each-custom-parameter.fir.txt b/kopy-compiler/test-data/diagnostics/valid/simple-copy-update-each-custom-parameter.fir.txt
index 174dd9c..5b02ca0 100644
--- a/kopy-compiler/test-data/diagnostics/valid/simple-copy-update-each-custom-parameter.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/valid/simple-copy-update-each-custom-parameter.fir.txt
@@ -31,8 +31,8 @@ FILE: simple-copy-update-each-custom-parameter.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/valid/simple-copy.fir.txt b/kopy-compiler/test-data/diagnostics/valid/simple-copy.fir.txt
index 1d51078..c7fc817 100644
--- a/kopy-compiler/test-data/diagnostics/valid/simple-copy.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/valid/simple-copy.fir.txt
@@ -28,8 +28,8 @@ FILE: simple-copy.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/valid/simple-deep-copy-with-multiple-scenarios.fir.txt b/kopy-compiler/test-data/diagnostics/valid/simple-deep-copy-with-multiple-scenarios.fir.txt
index 0e6b60e..51bbf9e 100644
--- a/kopy-compiler/test-data/diagnostics/valid/simple-deep-copy-with-multiple-scenarios.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/valid/simple-deep-copy-with-multiple-scenarios.fir.txt
@@ -33,8 +33,8 @@ FILE: simple-deep-copy-with-multiple-scenarios.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/House>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -69,8 +69,8 @@ FILE: simple-deep-copy-with-multiple-scenarios.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Kitchen>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Kitchen>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Kitchen>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Kitchen>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -105,8 +105,8 @@ FILE: simple-deep-copy-with-multiple-scenarios.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Cat>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Cat>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Cat>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Cat>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/valid/simple-deep-copy.fir.txt b/kopy-compiler/test-data/diagnostics/valid/simple-deep-copy.fir.txt
index 1a6c1b4..4fe1b19 100644
--- a/kopy-compiler/test-data/diagnostics/valid/simple-deep-copy.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/valid/simple-deep-copy.fir.txt
@@ -23,8 +23,8 @@ FILE: simple-deep-copy.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -54,8 +54,8 @@ FILE: simple-deep-copy.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/valid/simple-nested-copy-assign.fir.txt b/kopy-compiler/test-data/diagnostics/valid/simple-nested-copy-assign.fir.txt
index e2589f1..fadb782 100644
--- a/kopy-compiler/test-data/diagnostics/valid/simple-nested-copy-assign.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/valid/simple-nested-copy-assign.fir.txt
@@ -24,8 +24,8 @@ FILE: simple-nested-copy-assign.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -60,8 +60,8 @@ FILE: simple-nested-copy-assign.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Bar>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/valid/simple-nested-copy.fir.txt b/kopy-compiler/test-data/diagnostics/valid/simple-nested-copy.fir.txt
index 896db6c..03f5450 100644
--- a/kopy-compiler/test-data/diagnostics/valid/simple-nested-copy.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/valid/simple-nested-copy.fir.txt
@@ -32,8 +32,8 @@ FILE: simple-nested-copy.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/valid/simple-no-nest-copy-deep-set.fir.txt b/kopy-compiler/test-data/diagnostics/valid/simple-no-nest-copy-deep-set.fir.txt
index 7656fb6..7104ca8 100644
--- a/kopy-compiler/test-data/diagnostics/valid/simple-no-nest-copy-deep-set.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/valid/simple-no-nest-copy-deep-set.fir.txt
@@ -90,8 +90,8 @@ FILE: simple-no-nest-copy-deep-set.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-compiler/test-data/diagnostics/visibility/public.fir.txt b/kopy-compiler/test-data/diagnostics/visibility/public.fir.txt
index d97ef7c..3ad09a9 100644
--- a/kopy-compiler/test-data/diagnostics/visibility/public.fir.txt
+++ b/kopy-compiler/test-data/diagnostics/visibility/public.fir.txt
@@ -33,8 +33,8 @@ FILE: public.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
@@ -69,8 +69,8 @@ FILE: public.kt
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionUpdate|() public final infix fun <U> R|U|.update(transform: R|(U) -> U|): R|kotlin/Unit| {
         }
 
-        public final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo2>|
-            public get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo2>|
+        internal final val _atomic: R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo2>|
+            internal get(): R|kotlinx/atomicfu/AtomicRef<com/javiersc/kotlin/kopy/playground/Foo2>|
 
         @R|com/javiersc/kotlin/kopy/KopyOptIn|() @R|com/javiersc/kotlin/kopy/KopyFunctionSet|() public final infix fun <S> R|S|.set(other: R|S|): R|kotlin/Unit| {
         }
diff --git a/kopy-gradle-plugin/build.gradle.kts b/kopy-gradle-plugin/build.gradle.kts
index 4e23e0f..50349ef 100644
--- a/kopy-gradle-plugin/build.gradle.kts
+++ b/kopy-gradle-plugin/build.gradle.kts
@@ -1,3 +1,4 @@
+import com.javiersc.gradle.extensions.version.catalogs.artifact
 import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
 
 hubdle {
@@ -51,6 +52,7 @@ hubdle {
                         pluginUnderTestDependencies(
                             hubdle.android.tools.build.gradle,
                             hubdle.jetbrains.kotlin.gradle.plugin,
+                            hubdle.plugins.jetbrains.kotlin.plugin.atomicfu.artifact,
                             projects.kopyRuntime,
                         )
                     }
@@ -75,7 +77,11 @@ hubdle {
                 }
             }
 
-            testFunctional()
+            testFunctional {
+                dependencies {
+                    compileOnly(hubdle.plugins.jetbrains.kotlin.plugin.atomicfu.artifact)
+                }
+            }
         }
     }
 }
diff --git a/kopy-gradle-plugin/testFunctional/kotlin/com/javiersc/kotlin/kopy/gradle/plugin/KopyGradlePluginTest.kt b/kopy-gradle-plugin/testFunctional/kotlin/com/javiersc/kotlin/kopy/gradle/plugin/KopyGradlePluginTest.kt
index ed34b9f..0f3438c 100644
--- a/kopy-gradle-plugin/testFunctional/kotlin/com/javiersc/kotlin/kopy/gradle/plugin/KopyGradlePluginTest.kt
+++ b/kopy-gradle-plugin/testFunctional/kotlin/com/javiersc/kotlin/kopy/gradle/plugin/KopyGradlePluginTest.kt
@@ -6,6 +6,25 @@ import org.junit.jupiter.api.Test
 
 internal class KopyGradlePluginTest : GradleTestKitTest() {
 
+    @Test
+    fun `kotlin multiplatform empty`() = gradleTestKitTest("kotlin-multiplatform-empty") {
+        gradlew("assemble").output.shouldContain("BUILD SUCCESSFUL")
+    }
+
+    @Test
+    fun `kotlin plugin atomicfu`() = gradleTestKitTest("kotlin-plugin-atomicfu") {
+        gradlew("run")
+            .output
+            .shouldContain("House(squareMeters=200, kitchen=Kitchen(cat=Cat(name=Felix, age=7, numbers=[2, 3, 4]), squareMeters=20))")
+    }
+
+    @Test
+    fun `multi-module`() = gradleTestKitTest("multi-module") {
+        gradlew("run")
+            .output
+            .shouldContain("House(squareMeters=200, kitchen=Kitchen(cat=Cat(name=Felix, age=7, numbers=[2, 3, 4]), squareMeters=20))")
+    }
+
     @Test
     fun `simple setup`() = gradleTestKitTest("simple") {
         gradlew("run")
@@ -15,13 +34,14 @@ internal class KopyGradlePluginTest : GradleTestKitTest() {
 
     @Test
     fun `private visibility`() = gradleTestKitTest("private-visibility") {
-        withArguments("run").buildAndFail()
+        withArguments("run")
+            .buildAndFail()
             .output
-            .shouldContain("Cannot access 'fun copy(copy: House.() -> Unit): House': it is private in 'com/javiersc/kotlin/kopy/functiona/test/House'.")
-            .shouldContain("Cannot access 'fun <S> S.set(other: S): Unit': it is private in 'com/javiersc/kotlin/kopy/functiona/test/House'.")
-            .shouldContain("Cannot access 'fun <S> S.set(other: S): Unit': it is private in 'com/javiersc/kotlin/kopy/functiona/test/House'.")
-            .shouldContain("Cannot access 'fun <U> U.update(transform: (U) -> U): Unit': it is private in 'com/javiersc/kotlin/kopy/functiona/test/House'.")
-            .shouldContain("Cannot access 'fun <UE> Iterable<UE>.updateEach(transform: (UE) -> UE): Unit': it is private in 'com/javiersc/kotlin/kopy/functiona/test/House'.")
-            .shouldContain("Cannot access 'fun <S> S.set(other: S): Unit': it is private in 'com/javiersc/kotlin/kopy/functiona/test/House'.")
+            .shouldContain("Cannot access 'fun copy(copy: House.() -> Unit): House': it is private in 'com/javiersc/kotlin/kopy/functional/test/House'.")
+            .shouldContain("Cannot access 'fun <S> S.set(other: S): Unit': it is private in 'com/javiersc/kotlin/kopy/functional/test/House'.")
+            .shouldContain("Cannot access 'fun <S> S.set(other: S): Unit': it is private in 'com/javiersc/kotlin/kopy/functional/test/House'.")
+            .shouldContain("Cannot access 'fun <U> U.update(transform: (U) -> U): Unit': it is private in 'com/javiersc/kotlin/kopy/functional/test/House'.")
+            .shouldContain("Cannot access 'fun <UE> Iterable<UE>.updateEach(transform: (UE) -> UE): Unit': it is private in 'com/javiersc/kotlin/kopy/functional/test/House'.")
+            .shouldContain("Cannot access 'fun <S> S.set(other: S): Unit': it is private in 'com/javiersc/kotlin/kopy/functional/test/House'.")
     }
 }
diff --git a/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform-empty/build.gradle.kts b/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform-empty/build.gradle.kts
new file mode 100644
index 0000000..54627c1
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform-empty/build.gradle.kts
@@ -0,0 +1,13 @@
+plugins {
+    id("com.javiersc.kotlin.kopy")
+    id("org.jetbrains.kotlin.multiplatform")
+}
+
+kotlin {
+    linuxArm64()
+    linuxX64()
+}
+
+kopy {
+
+}
diff --git a/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform-empty/settings.gradle.kts b/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform-empty/settings.gradle.kts
new file mode 100644
index 0000000..f23f154
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform-empty/settings.gradle.kts
@@ -0,0 +1,26 @@
+import java.io.File
+
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        mavenCentral()
+        google()
+        maven(
+            url = File(System.getProperty("user.home")).resolve("mavenLocalTest/repository").toURI()
+        ) {
+            name = "mavenLocalTest"
+        }
+    }
+}
+
+dependencyResolutionManagement {
+    repositories {
+        mavenCentral()
+        google()
+        maven(
+            url = File(System.getProperty("user.home")).resolve("mavenLocalTest/repository").toURI()
+        ) {
+            name = "mavenLocalTest"
+        }
+    }
+}
diff --git a/kopy-gradle-plugin/testFunctional/resources/kotlin-plugin-atomicfu/build.gradle.kts b/kopy-gradle-plugin/testFunctional/resources/kotlin-plugin-atomicfu/build.gradle.kts
new file mode 100644
index 0000000..5866d86
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/kotlin-plugin-atomicfu/build.gradle.kts
@@ -0,0 +1,14 @@
+plugins {
+    application
+    id("com.javiersc.kotlin.kopy")
+    id("org.jetbrains.kotlin.jvm")
+    id("org.jetbrains.kotlin.plugin.atomicfu")
+}
+
+application {
+    mainClass = "com.javiersc.kotlin.kopy.functional.test.MainKt"
+}
+
+kopy {
+
+}
diff --git a/kopy-gradle-plugin/testFunctional/resources/kotlin-plugin-atomicfu/settings.gradle.kts b/kopy-gradle-plugin/testFunctional/resources/kotlin-plugin-atomicfu/settings.gradle.kts
new file mode 100644
index 0000000..f23f154
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/kotlin-plugin-atomicfu/settings.gradle.kts
@@ -0,0 +1,26 @@
+import java.io.File
+
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        mavenCentral()
+        google()
+        maven(
+            url = File(System.getProperty("user.home")).resolve("mavenLocalTest/repository").toURI()
+        ) {
+            name = "mavenLocalTest"
+        }
+    }
+}
+
+dependencyResolutionManagement {
+    repositories {
+        mavenCentral()
+        google()
+        maven(
+            url = File(System.getProperty("user.home")).resolve("mavenLocalTest/repository").toURI()
+        ) {
+            name = "mavenLocalTest"
+        }
+    }
+}
diff --git a/kopy-gradle-plugin/testFunctional/resources/kotlin-plugin-atomicfu/src/main/kotlin/main.kt b/kopy-gradle-plugin/testFunctional/resources/kotlin-plugin-atomicfu/src/main/kotlin/main.kt
new file mode 100644
index 0000000..cb2ce1d
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/kotlin-plugin-atomicfu/src/main/kotlin/main.kt
@@ -0,0 +1,30 @@
+package com.javiersc.kotlin.kopy.functional.test
+
+import com.javiersc.kotlin.kopy.Kopy
+
+fun main() {
+    val house = House(
+        squareMeters = 100,
+        kitchen = Kitchen(
+            cat = Cat(
+                name = "Garfield",
+                age = 5,
+                numbers = listOf(1, 2, 3),
+            ),
+            squareMeters = 10,
+        ),
+    )
+    val house2: House = house.copy {
+        squareMeters = 200
+        kitchen.cat.name = "Felix"
+        kitchen.cat.age.update { it + 2 }
+        kitchen.cat.numbers.updateEach { it + 1 }
+        kitchen.squareMeters.set(20)
+    }
+
+    println(house2)
+}
+
+@Kopy data class House(val squareMeters: Int, val kitchen: Kitchen)
+@Kopy data class Kitchen(val cat: Cat, val squareMeters: Int)
+@Kopy data class Cat(val name: String, val age: Int, val numbers: List<Int>)
diff --git a/kopy-gradle-plugin/testFunctional/resources/multi-module/lib-a/build.gradle.kts b/kopy-gradle-plugin/testFunctional/resources/multi-module/lib-a/build.gradle.kts
new file mode 100644
index 0000000..c9118cb
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/multi-module/lib-a/build.gradle.kts
@@ -0,0 +1,8 @@
+plugins {
+    id("com.javiersc.kotlin.kopy")
+    id("org.jetbrains.kotlin.jvm")
+}
+
+kopy {
+
+}
diff --git a/kopy-gradle-plugin/testFunctional/resources/multi-module/lib-a/src/main/kotlin/models.kt b/kopy-gradle-plugin/testFunctional/resources/multi-module/lib-a/src/main/kotlin/models.kt
new file mode 100644
index 0000000..92de9b6
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/multi-module/lib-a/src/main/kotlin/models.kt
@@ -0,0 +1,7 @@
+package com.javiersc.kotlin.kopy.functional.lib.a
+
+import com.javiersc.kotlin.kopy.Kopy
+
+@Kopy data class House(val squareMeters: Int, val kitchen: Kitchen)
+@Kopy data class Kitchen(val cat: Cat, val squareMeters: Int)
+@Kopy data class Cat(val name: String, val age: Int, val numbers: List<Int>)
diff --git a/kopy-gradle-plugin/testFunctional/resources/multi-module/lib-b/build.gradle.kts b/kopy-gradle-plugin/testFunctional/resources/multi-module/lib-b/build.gradle.kts
new file mode 100644
index 0000000..4beb733
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/multi-module/lib-b/build.gradle.kts
@@ -0,0 +1,17 @@
+plugins {
+    application
+    id("com.javiersc.kotlin.kopy")
+    id("org.jetbrains.kotlin.jvm")
+}
+
+application {
+    mainClass = "com.javiersc.kotlin.kopy.functional.lib.b.MainKt"
+}
+
+kopy {
+
+}
+
+dependencies {
+    implementation(project(":lib-a"))
+}
diff --git a/kopy-gradle-plugin/testFunctional/resources/multi-module/lib-b/src/main/kotlin/main.kt b/kopy-gradle-plugin/testFunctional/resources/multi-module/lib-b/src/main/kotlin/main.kt
new file mode 100644
index 0000000..5653b95
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/multi-module/lib-b/src/main/kotlin/main.kt
@@ -0,0 +1,28 @@
+package com.javiersc.kotlin.kopy.functional.lib.b
+
+import com.javiersc.kotlin.kopy.functional.lib.a.House
+import com.javiersc.kotlin.kopy.functional.lib.a.Kitchen
+import com.javiersc.kotlin.kopy.functional.lib.a.Cat
+
+fun main() {
+    val house = House(
+        squareMeters = 100,
+        kitchen = Kitchen(
+            cat = Cat(
+                name = "Garfield",
+                age = 5,
+                numbers = listOf(1, 2, 3),
+            ),
+            squareMeters = 10,
+        ),
+    )
+    val house2: House = house.copy {
+        squareMeters = 200
+        kitchen.cat.name = "Felix"
+        kitchen.cat.age.update { it + 2 }
+        kitchen.cat.numbers.updateEach { it + 1 }
+        kitchen.squareMeters.set(20)
+    }
+
+    println(house2)
+}
diff --git a/kopy-gradle-plugin/testFunctional/resources/multi-module/settings.gradle.kts b/kopy-gradle-plugin/testFunctional/resources/multi-module/settings.gradle.kts
new file mode 100644
index 0000000..7ff878a
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/multi-module/settings.gradle.kts
@@ -0,0 +1,31 @@
+import java.io.File
+
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        mavenCentral()
+        google()
+        maven(
+            url = File(System.getProperty("user.home")).resolve("mavenLocalTest/repository").toURI()
+        ) {
+            name = "mavenLocalTest"
+        }
+    }
+}
+
+dependencyResolutionManagement {
+    repositories {
+        mavenCentral()
+        google()
+        maven(
+            url = File(System.getProperty("user.home")).resolve("mavenLocalTest/repository").toURI()
+        ) {
+            name = "mavenLocalTest"
+        }
+    }
+}
+
+include(
+    ":lib-a",
+    ":lib-b",
+)
diff --git a/kopy-gradle-plugin/testFunctional/resources/private-visibility/build.gradle.kts b/kopy-gradle-plugin/testFunctional/resources/private-visibility/build.gradle.kts
index bf54035..1e6c519 100644
--- a/kopy-gradle-plugin/testFunctional/resources/private-visibility/build.gradle.kts
+++ b/kopy-gradle-plugin/testFunctional/resources/private-visibility/build.gradle.kts
@@ -7,7 +7,7 @@ plugins {
 }
 
 application {
-    mainClass = "com.javiersc.kotlin.kopy.functiona.test.MainKt"
+    mainClass = "com.javiersc.kotlin.kopy.functional.test.MainKt"
 }
 
 kopy {
diff --git a/kopy-gradle-plugin/testFunctional/resources/private-visibility/src/main/kotlin/main.kt b/kopy-gradle-plugin/testFunctional/resources/private-visibility/src/main/kotlin/main.kt
index 616c760..cb2ce1d 100644
--- a/kopy-gradle-plugin/testFunctional/resources/private-visibility/src/main/kotlin/main.kt
+++ b/kopy-gradle-plugin/testFunctional/resources/private-visibility/src/main/kotlin/main.kt
@@ -1,4 +1,4 @@
-package com.javiersc.kotlin.kopy.functiona.test
+package com.javiersc.kotlin.kopy.functional.test
 
 import com.javiersc.kotlin.kopy.Kopy
 
diff --git a/kopy-gradle-plugin/testFunctional/resources/simple/build.gradle.kts b/kopy-gradle-plugin/testFunctional/resources/simple/build.gradle.kts
index 57d2cef..a892e02 100644
--- a/kopy-gradle-plugin/testFunctional/resources/simple/build.gradle.kts
+++ b/kopy-gradle-plugin/testFunctional/resources/simple/build.gradle.kts
@@ -5,7 +5,7 @@ plugins {
 }
 
 application {
-    mainClass = "com.javiersc.kotlin.kopy.functiona.test.MainKt"
+    mainClass = "com.javiersc.kotlin.kopy.functional.test.MainKt"
 }
 
 kopy {
diff --git a/kopy-gradle-plugin/testFunctional/resources/simple/src/main/kotlin/main.kt b/kopy-gradle-plugin/testFunctional/resources/simple/src/main/kotlin/main.kt
index 616c760..cb2ce1d 100644
--- a/kopy-gradle-plugin/testFunctional/resources/simple/src/main/kotlin/main.kt
+++ b/kopy-gradle-plugin/testFunctional/resources/simple/src/main/kotlin/main.kt
@@ -1,4 +1,4 @@
-package com.javiersc.kotlin.kopy.functiona.test
+package com.javiersc.kotlin.kopy.functional.test
 
 import com.javiersc.kotlin.kopy.Kopy