<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 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])