class SystemProcessingTimeService implements TimerService {

	@Override
	public ScheduledFuture<?> scheduleAtFixedRate(ProcessingTimeCallback callback, long initialDelay, long period) {
		return scheduleRepeatedly(callback, initialDelay, period, false);
	}

	@VisibleForTesting  SystemProcessingTimeService(ExceptionHandler exceptionHandler);
	  SystemProcessingTimeService(ExceptionHandler exceptionHandler, ThreadFactory threadFactory);

}