@abc.abstractmethod<EOL><INDENT>def get_schedule_slot_notification_session(self, schedule_slot_receiver):<DEDENT>
return<EOL>
Gets the notification session for notifications pertaining to schedule slot changes.

        :param schedule_slot_receiver: the schedule slot receiver
        :type schedule_slot_receiver: ``osid.calendaring.ScheduleSlotReceiver``
        :return: a ``ScheduleSlotNotificationSession``
        :rtype: ``osid.calendaring.ScheduleSlotNotificationSession``
        :raise: ``NullArgument`` -- ``schedule_slot_receiver`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``Unimplemented`` -- ``supports_schedule_slot_notification()`` is ``false``

        *compliance: optional -- This method must be implemented if
        ``supports_schedule_slot_notification()`` is ``true``.*