anchor.diff:  void main() {
     group('analytics', () {
       Directory tempDir;
  +    MockFlutterConfig mockFlutterConfig;
   
       setUpAll(() {
         Cache.disableLocking();
  
positive.code: // found in the LICENSE file.
  
  import 'package:args/command_runner.dart';
  import 'package:flutter_tools/src/base/time.dart';
  import 'package:mockito/mockito.dart';
  
  import 'package:flutter_tools/src/base/file_system.dart';
  
negative.code: class MockUsage extends Mock implements Usage {}
  
  class MockDoctor extends Mock implements Doctor {}
  
  class MockFlutterConfig extends Mock implements Config {}
  