pocketmine\event\entity\EntityEatEvent::setResidue PHP Method

    public function setResidue($residue)
    {
        $this->residue = $residue;
    }

 public function setResidue($residue)
 {
     if (!$residue instanceof Block) {
         throw new \InvalidArgumentException("Eating a Block can only result in a Block residue");
     }
     parent::setResidue($residue);
 }