code: public ParallelTaskBuilder prepareUdp(String command) {
          reinitIfClosed();
          ParallelTaskBuilder cb = new ParallelTaskBuilder();
          cb.setProtocol(RequestProtocol.UDP);
          cb.getUdpMeta().setCommand(command);
          return cb;
      }
docs: Prepare a parallel UDP Task.
  
  @param command
  the command
  @return the parallel task builder