BaseCollection::deleteInternal

public function deleteInternal(): Result
{
	$result = new Result();

	$this->loadItems();
	$items = array_merge($this->items, $this->removedItems);

	foreach ($items as $item)
	{
		$res = $item->deleteInternal();

		if (!$res->isSuccess())
		{
			$result->addErrors($res->getErrors());
		}
	}

	return $result;
}