@abc.abstractmethod<EOL><INDENT>def get_recurring_event_search_session(self):<DEDENT>
return<EOL>
Gets the ``OsidSession`` associated with the recurring event search service.

        :return: a ``RecurringEventSearchSession``
        :rtype: ``osid.calendaring.RecurringEventSearchSession``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``Unimplemented`` -- ``supports_recurring_event_search()`` is ``false``

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