code: def _url(self, url=None, parameters=None):
          
  
          uri = url or self._settings["url"]
          if url and self._settings["base_url"]:
              uri = "%s/%s" % (self._settings["base_url"], url)
          uri += ".json"
          if parameters:
              uri += "?%s" % urllib.urlencode(parameters)
          return uri
docs: Build destination URL.
  
          Kwargs:
              url (str): Destination URL
              parameters (dict): Additional GET parameters to append to the URL
  
          Returns:
              str. URL