anchor.diff:    filters.Clear();
     print('Vector has ${filters.Size} elements.');
   
  +  free(pIndex);
     free(filters.ptr);
     winrtUninitialize();
   }
  
positive.code:   final vectorView = filters.GetView;
    print('VectorView has ${vectorView.length} elements.');
  
    final pIndex = allocator<Uint32>();
    var containsElement = filters.IndexOf('.jpeg', pIndex);
    print(containsElement
        ? 'The index of ".jpeg" is ${pIndex.value}.'
  
negative.code: 
  void main() async {
    winrtInitialize();
    final pIndex = calloc<Uint32>();
  
    final object = CreateObject(
        'Windows.Storage.Pickers.FileOpenPicker', IID_IFileOpenPicker);
  