anchor.diff:  import '../utils.dart';
   import '../winrt/winrt_helpers.dart';
   import 'IInspectable.dart';
  +import 'IVector%601.dart';
   
   /// @nodoc
   const IID_IFileOpenPicker = '{2CA8278A-12C5-4C5F-8977-94547793C241}';
  
positive.code: 
      if (FAILED(hr)) throw WindowsException(hr);
  
      return retValuePtr;
    }
  
    Pointer<COMObject> PickSingleFileAsync() {
  
negative.code:     }
    }
  
    IVector<String> get FileTypeFilter {
      final retValuePtr = calloc<COMObject>();
  
      final hr = ptr.ref.lpVtbl.value
  