@abc.abstractmethod<EOL><INDENT>def deleted_descendant_repository(self, repository_id, descendant_id):<DEDENT>
pass<EOL>
The callback for notifications of deleted repository descendants.

        :param repository_id: the ``Id`` of the ``Repository``
        :type repository_id: ``osid.id.Id``
        :param descendant_id: the ``Id`` of the removed ``Repository`` descendant
        :type descendant_id: ``osid.id.Id``


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