diff --git a/google-cloud-memorystore-v1beta/proto_docs/google/api/client.rb b/google-cloud-memorystore-v1beta/proto_docs/google/api/client.rb
index a8b1b06d1cad..c58739e32368 100644
--- a/google-cloud-memorystore-v1beta/proto_docs/google/api/client.rb
+++ b/google-cloud-memorystore-v1beta/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-metastore-v1/proto_docs/google/api/client.rb b/google-cloud-metastore-v1/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-metastore-v1/proto_docs/google/api/client.rb
+++ b/google-cloud-metastore-v1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-metastore-v1beta/proto_docs/google/api/client.rb b/google-cloud-metastore-v1beta/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-metastore-v1beta/proto_docs/google/api/client.rb
+++ b/google-cloud-metastore-v1beta/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-migration_center-v1/proto_docs/google/api/client.rb b/google-cloud-migration_center-v1/proto_docs/google/api/client.rb
index 97193034f37c..f20af9485bd9 100644
--- a/google-cloud-migration_center-v1/proto_docs/google/api/client.rb
+++ b/google-cloud-migration_center-v1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-monitoring-dashboard-v1/proto_docs/google/api/client.rb b/google-cloud-monitoring-dashboard-v1/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-monitoring-dashboard-v1/proto_docs/google/api/client.rb
+++ b/google-cloud-monitoring-dashboard-v1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-monitoring-metrics_scope-v1/proto_docs/google/api/client.rb b/google-cloud-monitoring-metrics_scope-v1/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-monitoring-metrics_scope-v1/proto_docs/google/api/client.rb
+++ b/google-cloud-monitoring-metrics_scope-v1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-monitoring-v3/proto_docs/google/api/client.rb b/google-cloud-monitoring-v3/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-monitoring-v3/proto_docs/google/api/client.rb
+++ b/google-cloud-monitoring-v3/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-netapp-v1/proto_docs/google/api/client.rb b/google-cloud-netapp-v1/proto_docs/google/api/client.rb
index 97193034f37c..f20af9485bd9 100644
--- a/google-cloud-netapp-v1/proto_docs/google/api/client.rb
+++ b/google-cloud-netapp-v1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-network_connectivity-v1/proto_docs/google/api/client.rb b/google-cloud-network_connectivity-v1/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-network_connectivity-v1/proto_docs/google/api/client.rb
+++ b/google-cloud-network_connectivity-v1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-network_connectivity-v1alpha1/proto_docs/google/api/client.rb b/google-cloud-network_connectivity-v1alpha1/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-network_connectivity-v1alpha1/proto_docs/google/api/client.rb
+++ b/google-cloud-network_connectivity-v1alpha1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-network_management-v1/proto_docs/google/api/client.rb b/google-cloud-network_management-v1/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-network_management-v1/proto_docs/google/api/client.rb
+++ b/google-cloud-network_management-v1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-network_security-v1beta1/proto_docs/google/api/client.rb b/google-cloud-network_security-v1beta1/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-network_security-v1beta1/proto_docs/google/api/client.rb
+++ b/google-cloud-network_security-v1beta1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-network_services-v1/proto_docs/google/api/client.rb b/google-cloud-network_services-v1/proto_docs/google/api/client.rb
index a8b1b06d1cad..c58739e32368 100644
--- a/google-cloud-network_services-v1/proto_docs/google/api/client.rb
+++ b/google-cloud-network_services-v1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-notebooks-v1/proto_docs/google/api/client.rb b/google-cloud-notebooks-v1/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-notebooks-v1/proto_docs/google/api/client.rb
+++ b/google-cloud-notebooks-v1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-notebooks-v1beta1/proto_docs/google/api/client.rb b/google-cloud-notebooks-v1beta1/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-notebooks-v1beta1/proto_docs/google/api/client.rb
+++ b/google-cloud-notebooks-v1beta1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-notebooks-v2/proto_docs/google/api/client.rb b/google-cloud-notebooks-v2/proto_docs/google/api/client.rb
index 97193034f37c..f20af9485bd9 100644
--- a/google-cloud-notebooks-v2/proto_docs/google/api/client.rb
+++ b/google-cloud-notebooks-v2/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-optimization-v1/proto_docs/google/api/client.rb b/google-cloud-optimization-v1/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-optimization-v1/proto_docs/google/api/client.rb
+++ b/google-cloud-optimization-v1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-oracle_database-v1/proto_docs/google/api/client.rb b/google-cloud-oracle_database-v1/proto_docs/google/api/client.rb
index a8b1b06d1cad..c58739e32368 100644
--- a/google-cloud-oracle_database-v1/proto_docs/google/api/client.rb
+++ b/google-cloud-oracle_database-v1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-orchestration-airflow-service-v1/proto_docs/google/api/client.rb b/google-cloud-orchestration-airflow-service-v1/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-orchestration-airflow-service-v1/proto_docs/google/api/client.rb
+++ b/google-cloud-orchestration-airflow-service-v1/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included
diff --git a/google-cloud-org_policy-v2/proto_docs/google/api/client.rb b/google-cloud-org_policy-v2/proto_docs/google/api/client.rb
index 7796382e3a21..e62ceba4577a 100644
--- a/google-cloud-org_policy-v2/proto_docs/google/api/client.rb
+++ b/google-cloud-org_policy-v2/proto_docs/google/api/client.rb
@@ -31,6 +31,8 @@ module Api
     # @!attribute [rw] selective_gapic_generation
     #   @return [::Google::Api::SelectiveGapicGeneration]
     #     Configuration for which RPCs should be generated in the GAPIC client.
+    #
+    #     Note: This field should not be used in most cases.
     class CommonLanguageSettings
       include ::Google::Protobuf::MessageExts
       extend ::Google::Protobuf::MessageExts::ClassMethods
@@ -441,6 +443,8 @@ class LongRunning
 
     # This message is used to configure the generation of a subset of the RPCs in
     # a service for client libraries.
+    #
+    # Note: This feature should not be used in most cases.
     # @!attribute [rw] methods
     #   @return [::Array<::String>]
     #     An allowlist of the fully qualified names of RPCs that should be included