def still_active(self):
        return self._key in _finalizer_registry
Used in methods of abstract models to find the super-most concrete
dataset/ETHPy150Open deanhiller/databus/webapp/play1.3.x/python/Lib/multiprocessing/util.py/Finalize.still_active--crossover with--dataset/ETHPy150Open stephenmcd/mezzanine/mezzanine/utils/models.py/base_concrete_model