code: def refresh(self):
          
          params = {"f": "json"}
          uURL = self._url + "/refresh"
          res = self._get(url=uURL, param_dict=params,
                             securityHandler=self._securityHandler,
                             proxy_port=self._proxy_port,
                             proxy_url=self._proxy_url)
          self.__init()
          return res
docs: refreshes a service