def is_sequestered(self):
return self._my_map['<STR_LIT>']<EOL>
Tests if this ``Containable`` is sequestered in that it should not appear outside of its aggregated composition.

        return: (boolean) - ``true`` if this containable is sequestered,
                ``false`` if this containable may appear outside its
                aggregate
        *compliance: mandatory -- This method must be implemented.*