code: public void printUsage(OutputStream out, String name, boolean showHidden) {
          printUsage(new PrintWriter(new OutputStreamWriter(out, UTF_8)), name, showHidden);
      }
docs: Print the option usage list for the command.
  
  @param out The output stream.
  @param name The sub-command to print help for.
  @param showHidden If hidden sub-commands should be shown.