def num_versions(self):
        return self.redis.scard(self.key)
Wait until all managed PD (of this Pilot Data Service) enter a final state
dataset/ETHPy150Open jessemyers/cheddar/cheddar/model/distribution.py/Project.num_versions--crossover with--dataset/ETHPy150Open saga-project/BigJob/pilot/impl/pilotdata_manager.py/PilotDataService.wait