    switch($this->transactionType){    case self::TYPE_NORMAL:    case self::TYPE_MISMATCH:     break;    case self::TYPE_USE_ITEM:     $this->putUnsignedVarInt($this->trData->actionType);     $this->putBlockPosition($this->trData->x, $this->trData->y, $this->trData->z);     $this->