static function newUri(Profile $actor, Managed_DataObject $object, $created = null) { if (is_null($created)) { $created = common_sql_now(); } return TagURI::mint(strtolower(get_called_class()) . ':%d:%s:%d:%s', $actor->getID(), ActivityUtils::resolveUri($object->getObjectType(), true), $object->getID(), common_date_iso8601($created)); }