public long timeLeft() {
		long millisUntilFinished;
		if (isPaused()) {
			millisUntilFinished = mPauseTimeRemaining;
		} else {
			millisUntilFinished = mStopTimeInFuture - SystemClock.elapsedRealtime();
			if (millisUntilFinished < 0)
				millisUntilFinished = 0;
		}
		return millisUntilFinished;
	}
Returns the number of milliseconds remaining until the timer is finished

@return number of milliseconds remaining until the timer is finished
subs/game/src/main/java/com/snatik/matches/utils/CountDownClock.java