code: def RunOnce(self, token=None, force=False, names=None):
      
      names = names or self.ListJobs(token=token)
      urns = [self.CRON_JOBS_PATH.Add(name) for name in names]
  
      for cron_job_urn in urns:
        try:
          with aff4.FACTORY.OpenWithLock(
              cron_job_urn, blocking=False, token=token,
              lease_time=600) as cron_job:
            try:
              logging.info("Running cron job: %s", cron_job.urn)
              cron_job.Run(force=force)
            except Exception as e:  # pylint: disable=broad-except
              logging.exception("Error processing cron job %s: %s", cron_job.urn,
                                e)
              stats_collector_instance.Get().IncrementCounter(
                  "cron_internal_error")
  
        except aff4.LockError:
          pass
docs: Tries to lock and run cron jobs.
  
      Args:
        token: security token
        force: If True, force a run
        names: List of job names to run.  If unset, run them all