def unregisterProducer(self):
        self.producer = None
Try to execute this command, performing model validation if
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/internet/_pollingfile.py/_PollableWritePipe.unregisterProducer--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/core/management/base.py/BaseCommand.execute