anchor.diff:        // App to enable the location services.
         _updatePositionList(
           _PositionItemType.log,
  -        _kLocationServicesDisabledMessage,
  +        _locationServicesDisabledMessage,
         );
   
         return false;
  
positive.code:     // continue accessing the position of the device.
      _updatePositionList(
        _PositionItemType.log,
        _kPermissionGrantedMessage,
      );
      return true;
    }
  
negative.code: }
  
  class _GeolocatorWidgetState extends State<GeolocatorWidget> {
    static const String _locationServicesDisabledMessage =
        'Location services are disabled.';
    static const String _permissionDeniedMessage = 'Permission denied.';
    static const String _permissionDeniedForeverMessage =
        'Permission denied forever.';
    static const String _permissionGrantedMessage = 'Permission granted.';
  
    final GeolocatorPlatform _geolocatorPlatform = GeolocatorPlatform.instance;
    final List<_PositionItem> _positionItems = <_PositionItem>[];
  