def request_raw_reverse(self, req, msg):
        """
        A raw request handler to demonstrate the calling convention if
        @request decoraters are not used. Reverses the message arguments.
        """
        # msg is a katcp.Message.request object
        reversed_args = msg.arguments[::-1]
        # req.make_reply() makes a katcp.Message.reply using the correct request
        # name and message ID
        return req.make_reply(*reversed_args)
A raw request handler to demonstrate the calling convention if
        @request decoraters are not used. Reverses the message arguments.