def overrides_calculated_entry(self):
return bool(self._my_map['<STR_LIT>'])<EOL>
Tests if this is a manual entry that overrides a calculated entry.

        return: (boolean) - ``true`` if this entry overrides a
                calculated entry, ``false`` otherwise. If ``true,`` then
                ``is_derived()`` must be ``false``.
        *compliance: mandatory -- This method must be implemented.*