İtem Entity problem

PHP:

use pocketmine\entity\object\ItemEntity;

Code:

public function temizle(){
        foreach ($this->getServer()->getLevels() as $level) {
            foreach ($level->getEntities() as $entity) {
                if ($entity instanceof ItemEntity) {
                    $entity->close();
                }
            }
        }
    }

Dont worked why?

 

Where did you call this function?

 

You are not even telling us what the problem is

 

Error?

 

Task but task is work

 

What