code: private static void buildMutateRowSettings(Builder builder, BigtableOptions options) {
      RetrySettings retrySettings =
          buildIdempotentRetrySettings(builder.mutateRowSettings().getRetrySettings(), options);
  
      builder.mutateRowSettings()
          .setRetrySettings(retrySettings)
          .setRetryableCodes(buildRetryCodes(options.getRetryOptions()));
    }
docs: To build BigtableDataSettings#mutateRowSettings with default Retry settings.