def METHOD_NAME(self, receive_id, global_model_params, 
                            average_weight_dict, client_schedule):
    logging.info("send_message_sync_model_to_client. receive_id = %d" % receive_id)
    message = Message(
        MyMessage.MSG_TYPE_S2C_SYNC_MODEL_TO_CLIENT,
        self.get_sender_id(),
        receive_id,
    )
    message.add_params(MyMessage.MSG_ARG_KEY_MODEL_PARAMS, global_model_params)
    # message.add_params(MyMessage.MSG_ARG_KEY_CLIENT_INDEX, str(client_index))
    message.add_params(MyMessage.MSG_ARG_KEY_AVG_WEIGHTS, average_weight_dict)
    message.add_params(MyMessage.MSG_ARG_KEY_CLIENT_SCHEDULE, client_schedule)
    self.send_message(message)