@flow.StateHandler()
  def Start(self):
    cron_jobs_ttl = config_lib.CONFIG["DataRetention.cron_jobs_flows_ttl"]
    if not cron_jobs_ttl:
      self.Log("TTL not set - nothing to do...")
      return

    jobs = cronjobs.CRON_MANAGER.ListJobs(token=self.token)
    jobs_objs = aff4.FACTORY.MultiOpen(jobs, aff4_type="CronJob",
                                       mode="r", token=self.token)

    for obj in jobs_objs:
      age = rdfvalue.RDFDatetime().Now() / cron_jobs_ttl
      obj.DeleteJobFlows(age)
      self.HeartBeat()
dataset/ETHPy150Open google/grr/grr/lib/flows/cron/data_retention.py/CleanCronJobs.Start/operator `-` -> `/`