Returns all sub-dispatcher nodes of the dispatcher.

        :return:
            All sub-dispatcher nodes of the dispatcher.
        :rtype: dict[str, dict]

def sub_dsp_nodes(self):
        """
        Returns all sub-dispatcher nodes of the dispatcher.

        :return:
            All sub-dispatcher nodes of the dispatcher.
        :rtype: dict[str, dict]
        """

        return {k: v for k, v in self.nodes.items() if
                v['type'] == 'dispatcher'}