code: protected function retData(array $ret)
      {
          if ($this->config->returnRaw) {
              return $ret;
          }
  
          $wabUrl = $ret['mweb_url'];
          if ($this->config->returnUrl) {
              $wabUrl .= '&redirect_url=' . urlencode($this->config->returnUrl);
          }
  
          return $wabUrl;
      }
docs: 这里由于
  @param array $ret
  @return mixed