gistfile1.txt

    public static <T> void ready(LiveData<T> liveData, LifecycleOwner lifecycleOwner, Callable<T> callable) {
        T t = liveData.getValue();
        if (t != null) {
            callable.call(t);
            return;
        }

        liveData.observe(lifecycleOwner, new Observer<T>() {
            @Override
            public void onChanged(@Nullable T t) {
                liveData.removeObserver(this);
                callable.call(t);
            }
        });
    }
    
    public static void onUpdate(Context context, AppWidgetManager appWidgetManager, int appWidgetId) {
        LiveData<Result> resultLiveData = getResultLiveData(appWidgetId);

        ready(resultLiveData, ForeverStartLifecycleOwner.INSTANCE, result -> onUpdate(context, appWidgetManager, result.stickyNoteConfig, result.note));
    }