private void fireTotpCountdown(long timeRemaining) {
    if ((mListener != null) && (!mShouldStop)) {
      mListener.onTotpCountdown(timeRemaining);
    }
  }
Stops this task. This task will never notify the listener after the task has been stopped.
java/com/google/android/apps/authenticator/otp/TotpCountdownTask.java