anchor.diff:  // Use of this source code is governed by a BSD-style license that can be
   // found in the LICENSE file.
   
  -// @dart=2.9
  +// ignore_for_file: import_of_legacy_library_into_null_safe
   
   import 'package:flutter/material.dart';
   
  
positive.code: 
  class RegisteredServiceDescription {
    const RegisteredServiceDescription._({
      this.service,
      this.title,
      this.icon,
      this.gaScreenName,
      this.gaItem,
  
negative.code: 
    final String service;
    final String title;
    final Widget? icon;
    final String? gaScreenName;
    final String? gaItem;
  }
  
  /// Hot reload service registered by Flutter Tools.
  