anchor.diff:            'locally. Defaults to \$FLUTTER_ENGINE if set, or tries to guess at\n'
             'the location based on the value of the --flutter-root option.',
     )
  +  ..addOption(
  +    'luci-builder',
  +    help: '[Flutter infrastructure] Name of the LUCI builder being run on.'
  +  )
     ..addFlag(
       'match-host-platform',
       defaultsTo: true,
  
positive.code: 
      if (serviceAccountTokenFile != null) {
        final Cocoon cocoon = Cocoon(serviceAccountTokenPath: serviceAccountTokenFile);
        await cocoon.sendTaskResult(taskName: taskName, result: result);
      }
  
      if (!result.succeeded) {
  
negative.code: 
  /// The path to the engine "src/" directory.
  String localEngineSrcPath;
  
  /// Name of the LUCI builder this test is currently running on.
  ///
  /// This is only passed on CI runs for Cocoon to be able to uniquely identify
  /// this test run.
  String luciBuilder;
  
  /// Whether to exit on first test failure.
  bool exitOnFirstTestFailure;
  