FolderLink::getRealObject

public function getRealObject()
{
	$realObject = parent::getRealObject();
	if($realObject === null)
	{
		return null;
	}
	if(!$realObject instanceof Folder)
	{
		throw new ObjectException('Wrong value in realObjectId, which do not specifies subclass of Folder');
	}

	return $realObject;
}