def get_applied_assessment_part_ids(self):
<EOL>return IdList(self._my_map['<STR_LIT>'])<EOL>
Qualifies ``is_cumulative()`` to apply to a specific list of assessment parts.

        If ``is_cumulative()`` is ``true,`` this method may return an
        empty list to mean all previous assessment parts.

        return: (osid.id.IdList) - list of assessment parts
        raise:  IllegalState - ``is_cumulative()`` is ``false``
        *compliance: mandatory -- This method must be implemented.*