anchor.diff:  }
   
   class _BottomNavigationState extends State<_GeolocatorExampleApp> {
  -
  -
     _TabItem _currentItem = _TabItem.singleLocation;
     final List<_TabItem> _bottomTabs = [
       _TabItem.singleLocation,
  
positive.code:   void initState() {
      if (Platform.isAndroid) {
        _bottomTabs.insert(1, _TabItem.singleFusedLocation);
      } 
      super.initState();
    }
    
    @override
    Widget build(BuildContext context) {
      return MaterialApp(
  
negative.code: import 'pages/location_stream_widget.dart';
  
  void main() => runApp(_GeolocatorExampleApp());
  
  enum _TabItem {
    singleLocation,
    singleFusedLocation,
    locationStream,
    distance,
    geocode
  }
  
  class _GeolocatorExampleApp extends StatefulWidget {
    @override
  