docs: def ReadResponsesForRequestId(self, session_id, request_id, timestamp=None):
      """Reads responses for one request.
  
      Args:
        session_id: The session id to use.
        request_id: The id of the request.
        timestamp: A timestamp as used in the data store.
  
      Yields:
        fetched responses for the request
      """
      request = rdf_flow_runner.RequestState(id=request_id, session_id=session_id)
      for _, responses in self.ReadResponses([request], timestamp=timestamp):
        return responses