docs: def send(self, **kwargs):
      """Create and send a specific request, and return the response.
  
      For example: send(ping=sc_pb.RequestPing()) => sc_pb.ResponsePing
  
      Args:
        **kwargs: A single kwarg with the name and value to fill in to Request.
  
      Returns:
        The Response corresponding to your request.
      """
      assert len(kwargs) == 1, "Must make a single request."
      res = self.send_req(sc_pb.Request(**kwargs))
      return getattr(res, list(kwargs.keys())[0])