feat: adds surcharges property and model to Rate object

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Next Release
 
+- Adds `surcharges` property and model to `Rate` object
 - Fix pagination parameters for `getNextPage` in `User` service
 
 ## v7.4.1 (2024-07-24)

src/main/java/com/easypost/model/Rate.java

@@ -1,5 +1,7 @@
 package com.easypost.model;
 
+import java.util.List;
+
 import lombok.Getter;
 
 @Getter
@@ -19,4 +21,5 @@ public class Rate extends EasyPostResource {
     private String shipmentId;
     private String carrierAccountId;
     private String billingType;
+    private List<Surcharge> surcharges;
 }

src/main/java/com/easypost/model/Surcharge.java

@@ -0,0 +1,13 @@
+package com.easypost.model;
+
+import lombok.Getter;
+
+@Getter
+public final class Surcharge extends EasyPostResource {
+    private String object;
+    private String type;
+    private String amount;
+    private String list_amount;
+    private String retail_amount;
+    private String currency;
+}