def has_parents(self):
return bool(self._my_map['<STR_LIT>'])<EOL>
Tests if any parents are available in this node structure.

        There may be no more parents in this node structure however
        there may be parents that exist in the hierarchy.

        return: (boolean) - ``true`` if this node has parents, ``false``
                otherwise
        *compliance: mandatory -- This method must be implemented.*