/**
* @param CollectableEntity $item
* @return CollectableEntity
* @throws Main\ArgumentTypeException
*/
protected function addItem(CollectableEntity $item)
{
$this->index++;
$item->setInternalIndex($this->index);
$this->collection[$this->index] = $item;
/** @var Main\Entity\Event $event */
$event = new Main\Event('sale', 'OnCollectionAddItem', array('COLLECTION' => $this->collection, 'ENTITY' => $item));
$event->send();
return $item;
}
