anchor.diff:      }
     }
     if (screen.shouldShowForFlutterVersion != null) {
  -    if (serviceManager.connectedApp.isFlutterAppNow &&
  -        !screen.shouldShowForFlutterVersion(
  -            serviceManager.connectedApp.flutterVersionNow)) {
  +    if (serviceManager.connectedApp!.isFlutterAppNow == true &&
  +        !screen.shouldShowForFlutterVersion!(
  +            serviceManager.connectedApp!.flutterVersionNow)) {
         return false;
       }
     }
  
positive.code: // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  // @dart=2.9
  
  import 'dart:async';
  import 'dart:math' as math;
  
negative.code:   /// Examples:
    ///  * 'package:provider/provider.dart'
    ///  * 'package:provider/'
    final String? requiresLibrary;
  
    /// Whether this screen should only be included when the app is running on the Dart VM.
    final bool requiresDartVm;
  