def METHOD_NAME(self, *args, **kwargs) -> Tuple[dict, dict]:
    """Returns aggregator arguments that are expecting by the nodes
    Returns:
        dict: contains `Aggregator` parameters that will be sent through MQTT message
                service
        dict: contains parameters that will be sent through file exchange message.
                Both dictionaries are mapping node_id to 'Aggregator` parameters specific
                to each Node.
    """
    return self._aggregator_args or {}, {}