shadows/framework/src/main/java/org/robolectric/shadows/ShadowAppWidgetManager.java
@Implementation
  protected void updateAppWidget(int appWidgetId, RemoteViews views) {
    WidgetInfo widgetInfo = widgetInfos.get(appWidgetId);
    int layoutId = views.getLayoutId();
    if (widgetInfo.layoutId != layoutId || alwaysRecreateViewsDuringUpdate) {
      widgetInfo.view = createWidgetView(layoutId);
      widgetInfo.layoutId = layoutId;
    }
    widgetInfo.lastRemoteViews = views;
    views.reapply(context, widgetInfo.view);
  }
@Implementation
  protected void updateAppWidget(int appWidgetId, RemoteViews views) {
    WidgetInfo widgetInfo = widgetInfos.get(appWidgetId);
    int layoutId = views.getLayoutId();
    if (widgetInfo.layoutId != layoutId || alwaysRecreateViewsDuringUpdate) {
      widgetInfo.view = createWidgetView(layoutId);
      widgetInfo.layoutId = layoutId;
    }
    widgetInfo.lastRemoteViews = views;
    views.reapply(context, widgetInfo.view);
  }
Simulates updating an {@code AppWidget} with a new set of views

@param appWidgetId id of widget
@param views views to update