anchor.diff:  // found in the LICENSE file.
   
   import 'package:args/command_runner.dart';
  +import 'package:flutter_tools/src/base/config.dart';
   import 'package:flutter_tools/src/base/time.dart';
  +import 'package:flutter_tools/src/features.dart';
   import 'package:mockito/mockito.dart';
   
   import 'package:flutter_tools/src/base/file_system.dart';
  
positive.code:     setUp(() {
        Cache.flutterRoot = '../..';
        tempDir = fs.systemTempDirectory.createTempSync('flutter_tools_analytics_test.');
      });
  
      tearDown(() {
  
negative.code: class MockUsage extends Mock implements Usage {}
  
  class MockDoctor extends Mock implements Doctor {}
  
  class MockFlutterConfig extends Mock implements Config {}
  