code: def github_request(self, path, callback, access_token=None,
                         post_args=None, **kwargs):
          
          url = self._API_URL + path
          all_args = {}
          if access_token:
              all_args["access_token"] = access_token
              all_args.update(kwargs)
          if all_args:
              url += "?" + auth.urllib_parse.urlencode(all_args)
          callback = self.async_callback(self._on_github_request, callback)
          http = self._get_auth_http_client()
          if post_args is not None:
              http.fetch(url, method="POST",
                         user_agent='Tinman/Tornado',
                         body=auth.urllib_parse.urlencode(post_args),
                         callback=callback)
          else:
              http.fetch(url, user_agent='Tinman/Tornado', callback=callback)
docs: Make a request to the GitHub API, passing in the path, a callback,
          the access token, optional post arguments and keyword arguments to be
          added as values in the request body or URI