'; var_dump($response); exit;
        }
        if (property_exists($response->body, 'errors'))
            $error = Error::createFromResponse($response);
        else
            $error = new HTTPError($response);
        return $error;
    }

    public static function getClient()
    {
        $class = get_called_class();
        return $class::$_client;
    }

    public static function getRegistry()
    {
        $class = get_called_class();
        return $class::$_registry;
    }

    public static function getURISpec()
    {
        $class = get_called_class();
        return $class::$_uri_spec;
    }
}