anchor.diff:          abbr: 'f',
           defaultsTo: '',
           help: 'Path to the FLX file. If this is not provided, an FLX will be built.');
  +    argParser.addOption('keystore',
  +        defaultsTo: '',
  +        help: 'Path to the keystore used to sign the app.');
  +    argParser.addOption('keystore-password',
  +        defaultsTo: '',
  +        help: 'Password used to access the keystore.');
  +    argParser.addOption('keystore-key-alias',
  +        defaultsTo: '',
  +        help: 'Alias of the entry within the keystore.');
  +    argParser.addOption('keystore-key-password',
  +        defaultsTo: '',
  +        help: 'Password for the entry within the keystore.');
     }
   
     Future<_ApkComponents> _findApkComponents(BuildConfiguration config) async {
  
positive.code:     } finally {
        tempDir.deleteSync(recursive: true);
      }
    }
  
    @override
  
negative.code: const String _kDefaultAndroidManifestPath = 'apk/AndroidManifest.xml';
  const String _kDefaultOutputPath = 'build/app.apk';
  const String _kDefaultResourcesPath = 'apk/res';
  
  // Alias of the key provided in the Chromium debug keystore
  const String _kDebugKeystoreKeyAlias = "chromiumdebugkey";
  
  // Password for the Chromium debug keystore
  const String _kDebugKeystorePassword = "chromium";
  
  const String _kAndroidPlatformVersion = '22';
  const String _kBuildToolsVersion = '22.0.1';
  