anchor.diff:    _kOptionSdkRoot,
     _kOptionTestFile,
     _kOptionDillFile,
  +  _kOptionIcudtl
   ];
   const String _kOptionCoverage = 'coverage';
   const String _kOptionCoveragePath = 'coverage-path';
  
positive.code:         fs.link(artifacts.getArtifactPath(Artifact.flutterTester));
      testerDestLink.parent.createSync(recursive: true);
      testerDestLink.createSync(shellPath);
      final Directory sdkRootDest =
          fs.directory(artifacts.getArtifactPath(Artifact.flutterPatchedSdkPath));
      sdkRootDest.createSync(recursive: true);
  
negative.code: const String _kOptionSdkRoot = 'sdk-root';
  const String _kOptionTestFile = 'test-file';
  const String _kOptionDillFile = 'dill-file';
  const String _kOptionIcudtl = 'icudtl';
  const List<String> _kRequiredOptions = <String>[
    _kOptionPackages,
    _kOptionShell,
  