anchor.diff:                ),
               ),
             ),
  -        )
  +        ),
         );
         final Finder columnWidgetFinder = find.byType(Column);
         expect(columnWidgetFinder, findsOneWidget);
  
positive.code: 
        expect(service.rebuildCount, equals(0));
        expect(
            await service.testBoolExtension(
                'trackRebuildDirtyWidgets', <String, String>{'enabled': 'true'}),
            equals('true'));
        expect(service.rebuildCount, equals(1));
        await tester.pump();
  
  
negative.code: 
        service.setSelection(clockDemoElement, 'my-group');
        final Map<String, Object> jsonObject = await service.testExtension(
          'getSelectedWidget',
          <String, String>{'arg': null, 'objectGroup': 'my-group'},
        ) as Map<String, Object>;
        final Map<String, Object> creationLocation = jsonObject['creationLocation'] as Map<String, Object>;
        expect(creationLocation, isNotNull);
        final String file = creationLocation['file'] as String;
        expect(file, endsWith('widget_inspector_test.dart'));
  