def METHOD_NAME(self):
    age = app.config.get("HARVESTER_ZOMBIE_AGE")
    since = dates.format(dates.before_now(age))
    actives = models.BackgroundJob.active(self.__action__, since=since)
    if self.background_job.id in [a.id for a in actives] and len(actives) == 1:
        return True
    if len(actives) == 0:
        return True
    return False