@abc.abstractmethod<EOL><INDENT>def register_for_deleted_schedules(self):<DEDENT>
pass<EOL>
Registers for notification of deleted schedules.

        ``ScheduleReceiver.deletedSchedules()`` is invoked when a
        schedule is removed from this calendar.

        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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