code: public static void printHelp(PrintStream stream) {
          stream.println();
          stream.println("Voldemort Admin Tool Async-Job Commands");
          stream.println("---------------------------------------");
          stream.println("list   Get async job list from nodes.");
          stream.println("stop   Stop async jobs on one node.");
          stream.println();
          stream.println("To get more information on each command,");
          stream.println("please try \'help async-job <command-name>\'.");
          stream.println();
      }
docs: Prints command-line help menu.