@abc.abstractmethod<EOL><INDENT>def new_descendant_depot(self, depot_id, descendant_id):<DEDENT>
pass<EOL>
The callback for notifications of new depot descendants.

        :param depot_id: the ``Id`` of the ``Depot``
        :type depot_id: ``osid.id.Id``
        :param descendant_id: the ``Id`` of the new ``Depot`` descendant
        :type descendant_id: ``osid.id.Id``


        *compliance: mandatory -- This method must be implemented.*