code: public void into(@NonNull RemoteViews remoteViews, @IdRes int viewId,
        @NonNull int[] appWidgetIds) {
      into(remoteViews, viewId, appWidgetIds, null);
    }
docs: Asynchronously fulfills the request into the specified {@link RemoteViews} object with the
  given {@code viewId}. This is used for loading bitmaps into all instances of a widget.