code: @CliObjectOption(description = "Specifies files should be updated if they're different in the source.")
    public EmbeddedGobblinDistcp update() {
      this.setConfiguration(RecursiveCopyableDataset.UPDATE_KEY, Boolean.toString(true));
      return this;
    }
docs: Specifies that files in the target should be updated if they have changed in the source. Equivalent to -update
  option in Hadoop distcp.