EntityCollection::isChanged

public function isChanged()
{
	if (count($this->collection) > 0)
	{
		/** @var Entity $item */
		foreach ($this->collection as $item)
		{
			if ($item->isChanged())
			{
				return true;
			}
		}
	}

	return $this->isAnyItemDeleted() || $this->isAnyItemAdded();
}