@abc.abstractmethod<EOL><INDENT>def get_calendars_by_schedule(self, schedule_id):<DEDENT>
return<EOL>
Gets the list of ``Calendars`` mapped to a ``Schedule``.

        :param schedule_id: ``Id`` of a ``Schedule``
        :type schedule_id: ``osid.id.Id``
        :return: list of calendars
        :rtype: ``osid.calendaring.CalendarList``
        :raise: ``NotFound`` -- ``schedule_id`` is not found
        :raise: ``NullArgument`` -- ``schedule_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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