Hprose\Client::useService PHP Method

    public function useService($uriList = array(), $namespace = '')
    {
        if (!empty($uriList)) {
            $this->setUriList($uriList);
        }
        if ($namespace) {
            $namespace .= "_";
        }
        return new Proxy($this, $namespace);
    }

 public function useService($url = '', $namespace = '')
 {
     $this->initUrl($url);
     return parent::useService($url, $namespace);
 }