@abc.abstractmethod<EOL><INDENT>def get_time_types_for_source(self, source_time_type):<DEDENT>
return<EOL>
Gets the list of target time types for a given source time type.

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

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