@abc.abstractmethod<EOL><INDENT>def get_time_period_search_session_for_calendar(self, calendar_id):<DEDENT>
return<EOL>
Gets the ``OsidSession`` associated with the time period search service for the given calendar.

        :param calendar_id: the ``Id`` of the calendar
        :type calendar_id: ``osid.id.Id``
        :return: a ``TimePeriodSearchSession``
        :rtype: ``osid.calendaring.TimePeriodSearchSession``
        :raise: ``NotFound`` -- ``calendar_id`` not found
        :raise: ``NullArgument`` -- ``calendar_id`` is ``null``
        :raise: ``OperationFailed`` -- ``unable to complete request``
        :raise: ``Unimplemented`` -- ``supports_time_period_search()`` or ``supports_visible_federation()`` is ``false``

        *compliance: optional -- This method must be implemented if
        ``supports_time_period_search()`` and
        ``supports_visible_federation()`` are ``true``.*