docs: @SuppressWarnings("WeakerAccess")
      public static Widget createWidgetFromModel(final GVRContext gvrContext,
              final String modelFile, Class<? extends Widget> widgetClass)
              throws InstantiationException, IOException {
          GVRSceneObject rootNode = loadModel(gvrContext, modelFile);
          return createWidget(rootNode, widgetClass);
      }