protected function Delete($url = null, $params = array())
    {
        if (empty($url))
            trigger_error('A URL is required in ' . __METHOD__, E_USER_ERROR);
        
		if (!empty($params))
			$this->AddParams($params);
        
        return $this->request->Delete($url, array_merge($this->default_params, $this->parameters))->response;
    }