// test generic findAll methods
IWidget [] allWidgets = persistenceManager.findAll(IWidget.class);
assertNotNull(allWidgets);
assertEquals(1, allWidgets.length);
IWidgetDefault [] allWidgetDefaults = persistenceManager.findAll(IWidgetDefault.class);
assertNotNull(allWidgetDefaults);
assertEquals(1, allWidgetDefaults.length);
IWidgetService [] widgetServices = persistenceManager.findAll(IWidgetService.class);
assertNotNull(widgetServices);
assertEquals(5, widgetServices.length);