anchor.diff:      }
     }
   }
  +
  +/// Path to the base directory for language tests.
  +final String languageTestPath = Platform.environment['LANGUAGE_TESTS'];
  +
  +/// Enable the following experiments for language tests.
  +final List<String> languageExperiments =
  +    (Platform.environment['LANGUAGE_EXPERIMENTS'] ?? '').split(RegExp(r'\s+'));
   
   /// The pub cache inherited by grinder.
   final String defaultPubCache = Platform.environment['PUB_CACHE'] ??
  
positive.code:     '--path',
      path.join(flutterDir.path, 'dev', 'docs', 'doc'),
    ]);
  }
  
  @Task('Validate flutter docs')
  
negative.code: Directory _flutterDir;
  
  Directory get flutterDir => _flutterDir ??= createTempSync('flutter');
  
  Directory _languageTestPackageDir;
  Directory get languageTestPackageDir =>
      _languageTestPackageDir ??= createTempSync('languageTestPackageDir');
  
  Directory get testPackage =>
      Directory(path.joinAll(['testing', 'test_package']));
  