diff --git a/samples/V2/AgentsClient/set_agent.php b/samples/V2/AgentsClient/set_agent.php
index 6915876..900a1be 100644
--- a/samples/V2/AgentsClient/set_agent.php
+++ b/samples/V2/AgentsClient/set_agent.php
@@ -56,7 +56,7 @@ function set_agent_sample(
     // Create a client.
     $agentsClient = new AgentsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $agent = (new Agent())
         ->setParent($formattedAgentParent)
         ->setDisplayName($agentDisplayName)
diff --git a/samples/V2/AnswerRecordsClient/update_answer_record.php b/samples/V2/AnswerRecordsClient/update_answer_record.php
index b73dc61..d166584 100644
--- a/samples/V2/AnswerRecordsClient/update_answer_record.php
+++ b/samples/V2/AnswerRecordsClient/update_answer_record.php
@@ -43,7 +43,7 @@ function update_answer_record_sample(): void
     // Create a client.
     $answerRecordsClient = new AnswerRecordsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $answerRecordAnswerFeedback = new AnswerFeedback();
     $answerRecord = (new AnswerRecord())
         ->setAnswerFeedback($answerRecordAnswerFeedback);
diff --git a/samples/V2/ContextsClient/create_context.php b/samples/V2/ContextsClient/create_context.php
index dded1c3..3e463e6 100644
--- a/samples/V2/ContextsClient/create_context.php
+++ b/samples/V2/ContextsClient/create_context.php
@@ -62,7 +62,7 @@ function create_context_sample(string $formattedParent, string $contextName): vo
     // Create a client.
     $contextsClient = new ContextsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $context = (new Context())
         ->setName($contextName);
 
diff --git a/samples/V2/ContextsClient/update_context.php b/samples/V2/ContextsClient/update_context.php
index a27fc4a..8b43f83 100644
--- a/samples/V2/ContextsClient/update_context.php
+++ b/samples/V2/ContextsClient/update_context.php
@@ -53,7 +53,7 @@ function update_context_sample(string $contextName): void
     // Create a client.
     $contextsClient = new ContextsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $context = (new Context())
         ->setName($contextName);
 
diff --git a/samples/V2/ConversationDatasetsClient/create_conversation_dataset.php b/samples/V2/ConversationDatasetsClient/create_conversation_dataset.php
index 0ada944..c980592 100644
--- a/samples/V2/ConversationDatasetsClient/create_conversation_dataset.php
+++ b/samples/V2/ConversationDatasetsClient/create_conversation_dataset.php
@@ -52,7 +52,7 @@ function create_conversation_dataset_sample(
     // Create a client.
     $conversationDatasetsClient = new ConversationDatasetsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $conversationDataset = (new ConversationDataset())
         ->setDisplayName($conversationDatasetDisplayName);
 
diff --git a/samples/V2/ConversationDatasetsClient/import_conversation_data.php b/samples/V2/ConversationDatasetsClient/import_conversation_data.php
index 5aa8fd1..e0b8f76 100644
--- a/samples/V2/ConversationDatasetsClient/import_conversation_data.php
+++ b/samples/V2/ConversationDatasetsClient/import_conversation_data.php
@@ -54,7 +54,7 @@ function import_conversation_data_sample(string $formattedName): void
     // Create a client.
     $conversationDatasetsClient = new ConversationDatasetsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $inputConfig = new InputConfig();
 
     // Call the API and handle any network failures.
diff --git a/samples/V2/ConversationModelsClient/create_conversation_model.php b/samples/V2/ConversationModelsClient/create_conversation_model.php
index 493ac0a..3d47ec9 100644
--- a/samples/V2/ConversationModelsClient/create_conversation_model.php
+++ b/samples/V2/ConversationModelsClient/create_conversation_model.php
@@ -56,7 +56,7 @@ function create_conversation_model_sample(
     // Create a client.
     $conversationModelsClient = new ConversationModelsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $inputDataset = (new InputDataset())
         ->setDataset($formattedConversationModelDatasetsDataset);
     $conversationModelDatasets = [$inputDataset,];
diff --git a/samples/V2/ConversationModelsClient/create_conversation_model_evaluation.php b/samples/V2/ConversationModelsClient/create_conversation_model_evaluation.php
index c4d7ee9..cd2daf2 100644
--- a/samples/V2/ConversationModelsClient/create_conversation_model_evaluation.php
+++ b/samples/V2/ConversationModelsClient/create_conversation_model_evaluation.php
@@ -42,7 +42,7 @@ function create_conversation_model_evaluation_sample(string $formattedParent): v
     // Create a client.
     $conversationModelsClient = new ConversationModelsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $conversationModelEvaluation = new ConversationModelEvaluation();
 
     // Call the API and handle any network failures.
diff --git a/samples/V2/ConversationProfilesClient/create_conversation_profile.php b/samples/V2/ConversationProfilesClient/create_conversation_profile.php
index 54e4f47..b4a7bef 100644
--- a/samples/V2/ConversationProfilesClient/create_conversation_profile.php
+++ b/samples/V2/ConversationProfilesClient/create_conversation_profile.php
@@ -47,7 +47,7 @@ function create_conversation_profile_sample(
     // Create a client.
     $conversationProfilesClient = new ConversationProfilesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $conversationProfile = (new ConversationProfile())
         ->setDisplayName($conversationProfileDisplayName);
 
diff --git a/samples/V2/ConversationProfilesClient/set_suggestion_feature_config.php b/samples/V2/ConversationProfilesClient/set_suggestion_feature_config.php
index 45c62cb..5fee12f 100644
--- a/samples/V2/ConversationProfilesClient/set_suggestion_feature_config.php
+++ b/samples/V2/ConversationProfilesClient/set_suggestion_feature_config.php
@@ -64,7 +64,7 @@ function set_suggestion_feature_config_sample(
     // Create a client.
     $conversationProfilesClient = new ConversationProfilesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $suggestionFeatureConfig = new SuggestionFeatureConfig();
 
     // Call the API and handle any network failures.
diff --git a/samples/V2/ConversationProfilesClient/update_conversation_profile.php b/samples/V2/ConversationProfilesClient/update_conversation_profile.php
index 29c8576..476eadc 100644
--- a/samples/V2/ConversationProfilesClient/update_conversation_profile.php
+++ b/samples/V2/ConversationProfilesClient/update_conversation_profile.php
@@ -43,7 +43,7 @@ function update_conversation_profile_sample(string $conversationProfileDisplayNa
     // Create a client.
     $conversationProfilesClient = new ConversationProfilesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $conversationProfile = (new ConversationProfile())
         ->setDisplayName($conversationProfileDisplayName);
     $updateMask = new FieldMask();
diff --git a/samples/V2/ConversationsClient/create_conversation.php b/samples/V2/ConversationsClient/create_conversation.php
index 87fe1a9..eeab825 100644
--- a/samples/V2/ConversationsClient/create_conversation.php
+++ b/samples/V2/ConversationsClient/create_conversation.php
@@ -66,7 +66,7 @@ function create_conversation_sample(
     // Create a client.
     $conversationsClient = new ConversationsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $conversation = (new Conversation())
         ->setConversationProfile($formattedConversationConversationProfile);
 
diff --git a/samples/V2/DocumentsClient/create_document.php b/samples/V2/DocumentsClient/create_document.php
index 3c52f39..d2d5acd 100644
--- a/samples/V2/DocumentsClient/create_document.php
+++ b/samples/V2/DocumentsClient/create_document.php
@@ -59,7 +59,7 @@ function create_document_sample(
     // Create a client.
     $documentsClient = new DocumentsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $documentKnowledgeTypes = [$documentKnowledgeTypesElement,];
     $document = (new Document())
         ->setDisplayName($documentDisplayName)
diff --git a/samples/V2/DocumentsClient/import_documents.php b/samples/V2/DocumentsClient/import_documents.php
index 3ecda6d..2cd4190 100644
--- a/samples/V2/DocumentsClient/import_documents.php
+++ b/samples/V2/DocumentsClient/import_documents.php
@@ -60,7 +60,7 @@ function import_documents_sample(
     // Create a client.
     $documentsClient = new DocumentsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $documentTemplateKnowledgeTypes = [$documentTemplateKnowledgeTypesElement,];
     $documentTemplate = (new ImportDocumentTemplate())
         ->setMimeType($documentTemplateMimeType)
diff --git a/samples/V2/DocumentsClient/update_document.php b/samples/V2/DocumentsClient/update_document.php
index 8975602..e8eba46 100644
--- a/samples/V2/DocumentsClient/update_document.php
+++ b/samples/V2/DocumentsClient/update_document.php
@@ -54,7 +54,7 @@ function update_document_sample(
     // Create a client.
     $documentsClient = new DocumentsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $documentKnowledgeTypes = [$documentKnowledgeTypesElement,];
     $document = (new Document())
         ->setDisplayName($documentDisplayName)
diff --git a/samples/V2/EntityTypesClient/batch_create_entities.php b/samples/V2/EntityTypesClient/batch_create_entities.php
index 1d7e21a..c8f11d2 100644
--- a/samples/V2/EntityTypesClient/batch_create_entities.php
+++ b/samples/V2/EntityTypesClient/batch_create_entities.php
@@ -76,7 +76,7 @@ function batch_create_entities_sample(
     // Create a client.
     $entityTypesClient = new EntityTypesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $entitiesSynonyms = [$entitiesSynonymsElement,];
     $entity = (new Entity())
         ->setValue($entitiesValue)
diff --git a/samples/V2/EntityTypesClient/batch_delete_entities.php b/samples/V2/EntityTypesClient/batch_delete_entities.php
index 2d72c8d..ca846f8 100644
--- a/samples/V2/EntityTypesClient/batch_delete_entities.php
+++ b/samples/V2/EntityTypesClient/batch_delete_entities.php
@@ -56,7 +56,7 @@ function batch_delete_entities_sample(string $formattedParent, string $entityVal
     // Create a client.
     $entityTypesClient = new EntityTypesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $entityValues = [$entityValuesElement,];
 
     // Call the API and handle any network failures.
diff --git a/samples/V2/EntityTypesClient/batch_delete_entity_types.php b/samples/V2/EntityTypesClient/batch_delete_entity_types.php
index 364afce..4dd8be9 100644
--- a/samples/V2/EntityTypesClient/batch_delete_entity_types.php
+++ b/samples/V2/EntityTypesClient/batch_delete_entity_types.php
@@ -57,7 +57,7 @@ function batch_delete_entity_types_sample(
     // Create a client.
     $entityTypesClient = new EntityTypesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $entityTypeNames = [$entityTypeNamesElement,];
 
     // Call the API and handle any network failures.
diff --git a/samples/V2/EntityTypesClient/batch_update_entities.php b/samples/V2/EntityTypesClient/batch_update_entities.php
index 325d5d1..cb665d3 100644
--- a/samples/V2/EntityTypesClient/batch_update_entities.php
+++ b/samples/V2/EntityTypesClient/batch_update_entities.php
@@ -79,7 +79,7 @@ function batch_update_entities_sample(
     // Create a client.
     $entityTypesClient = new EntityTypesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $entitiesSynonyms = [$entitiesSynonymsElement,];
     $entity = (new Entity())
         ->setValue($entitiesValue)
diff --git a/samples/V2/EntityTypesClient/create_entity_type.php b/samples/V2/EntityTypesClient/create_entity_type.php
index 17ca4d9..d2a328c 100644
--- a/samples/V2/EntityTypesClient/create_entity_type.php
+++ b/samples/V2/EntityTypesClient/create_entity_type.php
@@ -49,7 +49,7 @@ function create_entity_type_sample(
     // Create a client.
     $entityTypesClient = new EntityTypesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $entityType = (new EntityType())
         ->setDisplayName($entityTypeDisplayName)
         ->setKind($entityTypeKind);
diff --git a/samples/V2/EntityTypesClient/update_entity_type.php b/samples/V2/EntityTypesClient/update_entity_type.php
index db12f21..3b12c3c 100644
--- a/samples/V2/EntityTypesClient/update_entity_type.php
+++ b/samples/V2/EntityTypesClient/update_entity_type.php
@@ -43,7 +43,7 @@ function update_entity_type_sample(string $entityTypeDisplayName, int $entityTyp
     // Create a client.
     $entityTypesClient = new EntityTypesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $entityType = (new EntityType())
         ->setDisplayName($entityTypeDisplayName)
         ->setKind($entityTypeKind);
diff --git a/samples/V2/EnvironmentsClient/create_environment.php b/samples/V2/EnvironmentsClient/create_environment.php
index 8258ee5..ef88cf6 100644
--- a/samples/V2/EnvironmentsClient/create_environment.php
+++ b/samples/V2/EnvironmentsClient/create_environment.php
@@ -43,7 +43,7 @@ function create_environment_sample(string $formattedParent, string $environmentI
     // Create a client.
     $environmentsClient = new EnvironmentsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $environment = new Environment();
 
     // Call the API and handle any network failures.
diff --git a/samples/V2/EnvironmentsClient/update_environment.php b/samples/V2/EnvironmentsClient/update_environment.php
index 452031a..b9e3d37 100644
--- a/samples/V2/EnvironmentsClient/update_environment.php
+++ b/samples/V2/EnvironmentsClient/update_environment.php
@@ -53,7 +53,7 @@ function update_environment_sample(): void
     // Create a client.
     $environmentsClient = new EnvironmentsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $environment = new Environment();
     $updateMask = new FieldMask();
 
diff --git a/samples/V2/FulfillmentsClient/update_fulfillment.php b/samples/V2/FulfillmentsClient/update_fulfillment.php
index d781616..321cb69 100644
--- a/samples/V2/FulfillmentsClient/update_fulfillment.php
+++ b/samples/V2/FulfillmentsClient/update_fulfillment.php
@@ -44,7 +44,7 @@ function update_fulfillment_sample(string $fulfillmentName): void
     // Create a client.
     $fulfillmentsClient = new FulfillmentsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $fulfillment = (new Fulfillment())
         ->setName($fulfillmentName);
     $updateMask = new FieldMask();
diff --git a/samples/V2/IntentsClient/batch_delete_intents.php b/samples/V2/IntentsClient/batch_delete_intents.php
index 72fa04f..87faa75 100644
--- a/samples/V2/IntentsClient/batch_delete_intents.php
+++ b/samples/V2/IntentsClient/batch_delete_intents.php
@@ -55,7 +55,7 @@ function batch_delete_intents_sample(string $formattedParent, string $intentsDis
     // Create a client.
     $intentsClient = new IntentsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $intent = (new Intent())
         ->setDisplayName($intentsDisplayName);
     $intents = [$intent,];
diff --git a/samples/V2/IntentsClient/create_intent.php b/samples/V2/IntentsClient/create_intent.php
index dd810b1..62e495f 100644
--- a/samples/V2/IntentsClient/create_intent.php
+++ b/samples/V2/IntentsClient/create_intent.php
@@ -44,7 +44,7 @@ function create_intent_sample(string $formattedParent, string $intentDisplayName
     // Create a client.
     $intentsClient = new IntentsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $intent = (new Intent())
         ->setDisplayName($intentDisplayName);
 
diff --git a/samples/V2/IntentsClient/update_intent.php b/samples/V2/IntentsClient/update_intent.php
index 3ef1890..25c3146 100644
--- a/samples/V2/IntentsClient/update_intent.php
+++ b/samples/V2/IntentsClient/update_intent.php
@@ -41,7 +41,7 @@ function update_intent_sample(string $intentDisplayName): void
     // Create a client.
     $intentsClient = new IntentsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $intent = (new Intent())
         ->setDisplayName($intentDisplayName);
 
diff --git a/samples/V2/KnowledgeBasesClient/create_knowledge_base.php b/samples/V2/KnowledgeBasesClient/create_knowledge_base.php
index 4895f75..085658d 100644
--- a/samples/V2/KnowledgeBasesClient/create_knowledge_base.php
+++ b/samples/V2/KnowledgeBasesClient/create_knowledge_base.php
@@ -43,7 +43,7 @@ function create_knowledge_base_sample(
     // Create a client.
     $knowledgeBasesClient = new KnowledgeBasesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $knowledgeBase = (new KnowledgeBase())
         ->setDisplayName($knowledgeBaseDisplayName);
 
diff --git a/samples/V2/KnowledgeBasesClient/update_knowledge_base.php b/samples/V2/KnowledgeBasesClient/update_knowledge_base.php
index b7c6b9f..e56f306 100644
--- a/samples/V2/KnowledgeBasesClient/update_knowledge_base.php
+++ b/samples/V2/KnowledgeBasesClient/update_knowledge_base.php
@@ -38,7 +38,7 @@ function update_knowledge_base_sample(string $knowledgeBaseDisplayName): void
     // Create a client.
     $knowledgeBasesClient = new KnowledgeBasesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $knowledgeBase = (new KnowledgeBase())
         ->setDisplayName($knowledgeBaseDisplayName);
 
diff --git a/samples/V2/ParticipantsClient/create_participant.php b/samples/V2/ParticipantsClient/create_participant.php
index a747953..c5f57b9 100644
--- a/samples/V2/ParticipantsClient/create_participant.php
+++ b/samples/V2/ParticipantsClient/create_participant.php
@@ -40,7 +40,7 @@ function create_participant_sample(string $formattedParent): void
     // Create a client.
     $participantsClient = new ParticipantsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $participant = new Participant();
 
     // Call the API and handle any network failures.
diff --git a/samples/V2/ParticipantsClient/streaming_analyze_content.php b/samples/V2/ParticipantsClient/streaming_analyze_content.php
index bd81bc7..2a8ab93 100644
--- a/samples/V2/ParticipantsClient/streaming_analyze_content.php
+++ b/samples/V2/ParticipantsClient/streaming_analyze_content.php
@@ -56,7 +56,7 @@ function streaming_analyze_content_sample(string $formattedParticipant): void
     // Create a client.
     $participantsClient = new ParticipantsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $request = (new StreamingAnalyzeContentRequest())
         ->setParticipant($formattedParticipant);
 
diff --git a/samples/V2/ParticipantsClient/update_participant.php b/samples/V2/ParticipantsClient/update_participant.php
index c3869dd..99bb475 100644
--- a/samples/V2/ParticipantsClient/update_participant.php
+++ b/samples/V2/ParticipantsClient/update_participant.php
@@ -42,7 +42,7 @@ function update_participant_sample(): void
     // Create a client.
     $participantsClient = new ParticipantsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $participant = new Participant();
     $updateMask = new FieldMask();
 
diff --git a/samples/V2/SessionEntityTypesClient/create_session_entity_type.php b/samples/V2/SessionEntityTypesClient/create_session_entity_type.php
index ac9c709..a7caeb8 100644
--- a/samples/V2/SessionEntityTypesClient/create_session_entity_type.php
+++ b/samples/V2/SessionEntityTypesClient/create_session_entity_type.php
@@ -88,7 +88,7 @@ function create_session_entity_type_sample(
     // Create a client.
     $sessionEntityTypesClient = new SessionEntityTypesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $sessionEntityTypeEntitiesSynonyms = [$sessionEntityTypeEntitiesSynonymsElement,];
     $entity = (new Entity())
         ->setValue($sessionEntityTypeEntitiesValue)
diff --git a/samples/V2/SessionEntityTypesClient/update_session_entity_type.php b/samples/V2/SessionEntityTypesClient/update_session_entity_type.php
index 33eeb25..c9edf48 100644
--- a/samples/V2/SessionEntityTypesClient/update_session_entity_type.php
+++ b/samples/V2/SessionEntityTypesClient/update_session_entity_type.php
@@ -77,7 +77,7 @@ function update_session_entity_type_sample(
     // Create a client.
     $sessionEntityTypesClient = new SessionEntityTypesClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $sessionEntityTypeEntitiesSynonyms = [$sessionEntityTypeEntitiesSynonymsElement,];
     $entity = (new Entity())
         ->setValue($sessionEntityTypeEntitiesValue)
diff --git a/samples/V2/SessionsClient/detect_intent.php b/samples/V2/SessionsClient/detect_intent.php
index 7e99b02..c10c80c 100644
--- a/samples/V2/SessionsClient/detect_intent.php
+++ b/samples/V2/SessionsClient/detect_intent.php
@@ -69,7 +69,7 @@ function detect_intent_sample(string $formattedSession): void
     // Create a client.
     $sessionsClient = new SessionsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $queryInput = new QueryInput();
 
     // Call the API and handle any network failures.
diff --git a/samples/V2/SessionsClient/streaming_detect_intent.php b/samples/V2/SessionsClient/streaming_detect_intent.php
index 892b933..a53b66d 100644
--- a/samples/V2/SessionsClient/streaming_detect_intent.php
+++ b/samples/V2/SessionsClient/streaming_detect_intent.php
@@ -70,7 +70,7 @@ function streaming_detect_intent_sample(string $formattedSession): void
     // Create a client.
     $sessionsClient = new SessionsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $queryInput = new QueryInput();
     $request = (new StreamingDetectIntentRequest())
         ->setSession($formattedSession)
diff --git a/samples/V2/VersionsClient/create_version.php b/samples/V2/VersionsClient/create_version.php
index 53af59f..ba59318 100644
--- a/samples/V2/VersionsClient/create_version.php
+++ b/samples/V2/VersionsClient/create_version.php
@@ -44,7 +44,7 @@ function create_version_sample(string $formattedParent): void
     // Create a client.
     $versionsClient = new VersionsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $version = new Version();
 
     // Call the API and handle any network failures.
diff --git a/samples/V2/VersionsClient/update_version.php b/samples/V2/VersionsClient/update_version.php
index 44adfd1..0793cc8 100644
--- a/samples/V2/VersionsClient/update_version.php
+++ b/samples/V2/VersionsClient/update_version.php
@@ -46,7 +46,7 @@ function update_version_sample(): void
     // Create a client.
     $versionsClient = new VersionsClient();
 
-    // Prepare the request message.
+    // Prepare any non-scalar elements to be passed along with the request.
     $version = new Version();
     $updateMask = new FieldMask();