def get_overridden_calculated_entry_id(self):
if not self.overrides_calculated_entry():<EOL><INDENT>raise errors.IllegalState()<EOL><DEDENT>return self._my_map['<STR_LIT>']<EOL>
Gets the calculated entry ``Id`` this entry overrides.

        return: (osid.id.Id) - the calculated entry ``Id``
        raise:  IllegalState - ``overrides_derived_entry()`` is
                ``false``
        *compliance: mandatory -- This method must be implemented.*