code: def _request_raw_content(self, url, timeout):
          
  
          request = Request(url)
  
          if self.referer is not None:
              request.add_header('Referer', self.referer)
  
          raw_xml = self._call_geocoder(
              request,
              timeout=timeout,
              deserializer=None
          )
  
          return raw_xml
docs: Send the request to get raw content.