Add a single data node to the dispatcher.

        :param data_id:
            Data node id. If None will be assigned automatically ('unknown<%d>')
            not in dmap.
        :type data_id: str, optional

        :param default_value:
            Data node default value. This will be used as input if it is not
            specified as inputs in the ArciDispatch algorithm.
        :type default_value: T, optional

        :param initial_dist:
            Initial distance in the ArciDispatch algorithm when the data node
            default value is used.
        :type initial_dist: float, int, optional

        :param wait_inputs:
            If True ArciDispatch algorithm stops on the node until it gets all
            input estimations.
        :type wait_inputs: bool, optional

        :param wildcard:
            If True, when the data node is used as input and target in the
            ArciDispatch algorithm, the input value will be used as input for
            the connected functions, but not as output.
        :type wildcard: bool, optional

        :param function:
            Data node estimation function.
            This can be any function that takes only one dictionary
            (key=function node id, value=estimation of data node) as input and
            return one value that is the estimation of the data node.
        :type function: callable, optional

        :param callback:
            Callback function to be called after node estimation.
            This can be any function that takes only one argument that is the
            data node estimation output. It does not return anything.
        :type callback: callable, optional

        :param description:
            Data node's description.
        :type description: str, optional

        :param filters:
            A list of functions that are invoked after the invocation of the
            main function.
        :type filters: list[function], optional

        :param await_result:
            If True the Dispatcher waits data results before assigning them to
            the solution. If a number is defined this is used as `timeout` for
            `Future.result` method [default: False]. Note this is used when
            asynchronous or parallel execution is enable.
        :type await_result: bool|int|float, optional

        :param kwargs:
            Set additional node attributes using key=value.
        :type kwargs: keyword arguments, optional

        :return:
            Self.
        :rtype: BlueDispatcher

def add_data(self, data_id=None, default_value=EMPTY, initial_dist=0.0,
                 wait_inputs=False, wildcard=None, function=None, callback=None,
                 description=None, filters=None, await_result=None, **kwargs):
        """
        Add a single data node to the dispatcher.

        :param data_id:
            Data node id. If None will be assigned automatically ('unknown<%d>')
            not in dmap.
        :type data_id: str, optional

        :param default_value:
            Data node default value. This will be used as input if it is not
            specified as inputs in the ArciDispatch algorithm.
        :type default_value: T, optional

        :param initial_dist:
            Initial distance in the ArciDispatch algorithm when the data node
            default value is used.
        :type initial_dist: float, int, optional

        :param wait_inputs:
            If True ArciDispatch algorithm stops on the node until it gets all
            input estimations.
        :type wait_inputs: bool, optional

        :param wildcard:
            If True, when the data node is used as input and target in the
            ArciDispatch algorithm, the input value will be used as input for
            the connected functions, but not as output.
        :type wildcard: bool, optional

        :param function:
            Data node estimation function.
            This can be any function that takes only one dictionary
            (key=function node id, value=estimation of data node) as input and
            return one value that is the estimation of the data node.
        :type function: callable, optional

        :param callback:
            Callback function to be called after node estimation.
            This can be any function that takes only one argument that is the
            data node estimation output. It does not return anything.
        :type callback: callable, optional

        :param description:
            Data node's description.
        :type description: str, optional

        :param filters:
            A list of functions that are invoked after the invocation of the
            main function.
        :type filters: list[function], optional

        :param await_result:
            If True the Dispatcher waits data results before assigning them to
            the solution. If a number is defined this is used as `timeout` for
            `Future.result` method [default: False]. Note this is used when
            asynchronous or parallel execution is enable.
        :type await_result: bool|int|float, optional

        :param kwargs:
            Set additional node attributes using key=value.
        :type kwargs: keyword arguments, optional

        :return:
            Self.
        :rtype: BlueDispatcher
        """
        kwargs.update(_call_kw(locals()))
        self.deferred.append(('add_data', kwargs))
        return self