code: def parents(self, id, level=None, featuretype=None, order_by=None,
                  reverse=False, completely_within=False, limit=None):
          
          return self._relation(
              id, join_on='parent', join_to='child', level=level,
              featuretype=featuretype, order_by=order_by, reverse=reverse,
              limit=limit, completely_within=completely_within)
docs: Return parents of feature `id`.
          {_relation_docstring}