def children(self):
        return self._children.keys()


    # Hierarchy methods
    # -----------------
Tries to re-evaluate the _failed_fields for each model.
dataset/ETHPy150Open rossant/h5view/h5view.py/Item.children--crossover with--dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/South-1.0.2/south/orm.py/_FakeORM.retry_failed_fields