private function parseResponse($data, $op)
    {
        $arr = array();
        $xml = new \SimpleXMLElement($data);
        $xml = $xml->xpath('/soap:Envelope/soap:Body');
        $xml = $xml[0];
        $data = json_decode(json_encode($xml));
        $opResponse = $op . 'Response';
        $opResult = $op . 'Result';
        $arr = $this->object2array($data->$opResponse->$opResult);
        return $arr;
    }