public static void formatDuration(long time, long now, PrintWriter pw) {
        if (time == 0) {
            pw.print("--");
            return;
        }
        formatDuration(time - now, pw, 0);
    }
@hide Just for debugging; not internationalized.
android/android_framework/base/src/main/java/github/tornaco/android/thanos/core/util/TimeUtils.java