def get_all_expired(self, expires):
        return self.filter(date_done__lt=now() - maybe_timedelta(expires))
Helper function to attach a guided tour (if required) to the output
dataset/ETHPy150Open celery/django-celery/djcelery/managers.py/ResultManager.get_all_expired--crossover with--dataset/ETHPy150Open sahana/eden/modules/s3db/tour.py/tour_builder