code: def _send(self, **req_kwargs):
          
          auth_token = self._auth.getAuthToken()
          if auth_token is None:
              raise exception.LoginException('Not logged in')
  
          req_kwargs.setdefault('headers', {
              'Authorization': 'OAuth ' + auth_token
          })
  
          return self._session.request(**req_kwargs)
docs: Send an authenticated request to a Google API.
  
          Args:
              **req_kwargs: Arbitrary keyword arguments to pass to Requests.
  
          Return:
              requests.Response: The raw response.
  
          Raises:
              LoginException: If :py:meth:`login` has not been called.