public OperationCallSettings.Builder<CreateSourceRequest, Source, OperationMetadata>
        createSourceOperationSettings() {
      return createSourceOperationSettings;
    }
Returns the builder for the settings used for calls to createSource.
java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/VmMigrationStubSettings.java