docs: def _handle_response(self, msg_id, result=None, error=None):
          """Handle a response from the client."""
          request_future = self._server_request_futures.pop(msg_id, None)
  
          if not request_future:
              log.warn("Received response to unknown message id %s", msg_id)
              return
  
          if error is not None:
              log.debug("Received error response to message %s: %s", msg_id, error)
              request_future.set_exception(JsonRpcException.from_dict(error))
  
          log.debug("Received result for message %s: %s", msg_id, result)
          request_future.set_result(result)