use pocketmine\network\PocketEditionNetworkSession; class ContainerClosePacket extends DataPacket{ const NETWORK_ID = Info::CONTAINER_CLOSE_PACKET; public $windowid; public function decode(){ $this->windowid = $this->getByte(); } public function encode(){ $this->reset(); $this->putByte($this->windowid); } public function handle(PocketEditionNetworkSession $session) : bool{ return $session->handleContainerClose($this); } }