public OperationCallSettings.Builder<UpdateSourceRequest, Source, OperationMetadata>
        updateSourceOperationSettings() {
      return getStubSettingsBuilder().updateSourceOperationSettings();
    }
Returns the builder for the settings used for calls to updateSource.
java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/VmMigrationSettings.java