code: public function handleCommandHelp(Event $event, Queue $queue)
      {
          $this->sendIrcResponse($event, $queue, $this->getHelpLines());
      }
docs: Handle the help command
  
  @param \Phergie\Irc\Plugin\React\Command\CommandEvent $event
  @param \Phergie\Irc\Bot\React\EventQueueInterface $queue