@Deprecated
        public boolean getHintShowBackgroundOnly() {
            return (mFlags & FLAG_HINT_SHOW_BACKGROUND_ONLY) != 0;
        }
Get a visual hint that only the background image of this notification should be
displayed, and other semantic content should be hidden. This hint is only applicable
to sub-pages added using {@link NotificationCompat.WearableExtender#addPage}.
android/android_framework/base/src/main/java/github/tornaco/android/thanos/core/compat/NotificationCompat.java