anchor.diff:    String filename = 'spark-${version}.zip';
     archive(context, filename);
     context.log('Created ${filename}');
  -  
  +
     WebStoreClient client =
         new WebStoreClient(appID, clientID, clientSecret, refreshToken);
     context.log('Authenticating...');
  
positive.code:     compilerDir.createSync();
  
      _delete('packages/compiler/compiler', context);
      _delete('packages/compiler/compiler', context);
      _delete('packages/compiler/lib', context);
      _delete('app/sdk/lib/_internal/compiler/samples', context);
      copyDirectory(getDir('app/sdk/lib/_internal/compiler'), getDir('packages/compiler/compiler'), context);
  
negative.code: 
    destFile.writeAsBytesSync(writer.toBytes());
  }
  
  void _printSize(GrinderContext context, File file) {
    int sizeKb = file.lengthSync() ~/ 1024;
  