@abc.abstractmethod<EOL><INDENT>def changed_assessmenst_taken(self, notification_id, assessment_taken_ids):<DEDENT>
pass<EOL>
The callback for notification of updated taken assessments.

        :param notification_id: the notification ``Id``
        :type notification_id: ``osid.id.Id``
        :param assessment_taken_ids: the ``Ids`` of the updated ``AssessmentsTaken``
        :type assessment_taken_ids: ``osid.id.IdList``


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