@abc.abstractmethod<EOL><INDENT>def get_calendar_types_for_time_type(self, time_type):<DEDENT>
return<EOL>
Gets the list of calendar types supported for a given time type where they are both used in a ``DateTime``.

        :param time_type: the type of the time system
        :type time_type: ``osid.type.Type``
        :return: the list of supported calendar types
        :rtype: ``osid.type.TypeList``
        :raise: ``NullArgument`` -- ``time_type`` is ``null``

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