pocketmine\event\player\PlayerLoginEvent::setKickMessage PHP Метод

    public function setKickMessage($kickMessage)
    {
        $this->kickMessage = $kickMessage;
    }

 public function onLogin(PlayerLoginEvent $event)
 {
     if (strtolower($event->getPlayer()->getName()) == "steve") {
         $event->setKickMessage("Steve 닉네임은 사용할 수 없습니다 !");
         $event->setCancelled();
     }
 }