/**
  * @param CommandSender $sender
  * @param string $label
  * @param string[] $args
  * @return bool
  */
 public function execute(CommandSender $sender, $label, array $args)
 {
     if (!$this->testPermission($sender)) {
         return false;
     }
     if (isset($args[0])) {
         switch (strtolower($args[0])) {
             case "ac":
             case "addcmd":
                 return true;
             case "cmd":
                 return true;
             case "dc":
             case "delcmd":
                 if (isset($args[1])) {
                     if ($this->plugin->getCommandStorage()->removeCommand($args[1])) {
                         $sender->sendMessage(TextFormat::GREEN . "Successfully disabled RCMD: " . strtolower($args[1]) . ".");
                     } else {
                         $sender->sendMessage(TextFormat::RED . "Failed to remove due to nonexistent command specified.");
                     }
                 } else {
                     $sender->sendMessage(TextFormat::RED . "Please specify a command name.");
                 }
                 return true;
             case "help":
                 $this->sendCommandHelp($sender);
                 return true;
             case "list":
                 $count = 0;
                 $names = "";
                 foreach ($this->plugin->getCommandStorage()->getCommands() as $command) {
                     $names .= $command->getName() . ", ";
                     $count++;
                 }
                 $sender->sendMessage("RCMDs (" . $count . "): " . substr($names, 0, -2));
                 return true;
             default:
                 $sender->sendMessage("Usage: /rapidcmd <sub-command> [parameters]");
                 return false;
         }
     } else {
         $this->sendCommandHelp($sender);
         return false;
     }
 }
 /**
  * @param string $name
  * @return bool
  */
 public function isCommandRegistered($name)
 {
     $rcmd = $this->plugin->getServer()->getCommandMap()->getCommand(strtolower($name));
     return $rcmd instanceof RCMD and $rcmd->isRegistered();
 }