'Deletes flows initiated by the job that are older than specified.'

def DeleteJobFlows(self, age=None):

    if (age is None):
        raise ValueError("age    can't    be    None")
    child_flows = list(self.ListChildren(age=age))
    with queue_manager.QueueManager(token=self.token) as queuemanager:
        queuemanager.MultiDestroyFlowStates(child_flows)
    aff4.FACTORY.MultiDelete(child_flows, token=self.token)
