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

        :param depot_id: the ``Id`` of the ``Depot``
        :type depot_id: ``osid.id.Id``
        :param ancestor_id: ``has_record_type(depot_record_type) is false``
        :type ancestor_id: ``osid.id.Id``


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