def defined(self, key):
            return _HStoreDefinedFunction(self.expr, key)
Converts a folder id to a folder name.
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/dialects/postgresql/hstore.py/HSTORE.comparator_factory.defined--crossover with--dataset/ETHPy150Open dossier/dossier.web/dossier/web/label_folders.py/Folders.id_to_name