pocketmine\event\server\DataPacketSendEvent::getPacket PHP Method

    public function getPacket()
    {
        return $this->packet;
    }

 public function onDataPacketSend(DataPacketSendEvent $event)
 {
     if ($event->getPacket() instanceof AddPlayerPacket) {
         /** @var $pk AddPlayerPacket */
         $pk = $event->getPacket();
         if (isset($this->blockMans[spl_object_hash($event->getPlayer()->getLevel()->getEntity($pk->eid))])) {
             $event->setCancelled(true);
         }
     }
 }