anchor.diff:        final int numLocationEntries = locationsForFile.length ~/ 3;
         expect(numLocationEntries, equals(numDataEntries));
   
  -      final Map<int, _CreationLocation> knownLocations =
  -          <int, _CreationLocation>{};
  +      final Map<int, _CreationLocation> knownLocations = <int, _CreationLocation>{};
         addToKnownLocationsMap(
           knownLocations: knownLocations,
           newLocations: newLocations,
  
positive.code:       expect(nodes[3].runtimeType, StringProperty);
        expect(nodes[3].name, 'dummy2');
        expect(nodes[4].runtimeType, DiagnosticsStackTrace);
      }, skip: WidgetInspectorService.instance.isWidgetCreationTracked());
  
      testWidgets('WidgetInspectorService setPubRootDirectories', (WidgetTester tester) async {
        await tester.pumpWidget(
  
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'));
  