def METHOD_NAME(self, interval, now=False, random_delay_min=0, random_delay_max=0):
    assert not self.running
    self._interval = interval
    self._random_delay_min = random_delay_min
    self._random_delay_max = random_delay_max
    self._start_time = self._reactor.seconds()
    self.running = True
    self._schedule(force_initial_now=now)