protected override async void OnFileActivated(FileActivatedEventArgs args)
        {
            await SharedTargetService.OnFileActivated(args);

            // TODO: Handle file activation
            // The number of files received is args.Files.Size
            // The name of the first file is args.Files[0].Name
        }
 protected override async void OnShareTargetActivated(ShareTargetActivatedEventArgs args)
 {
     await SharedTargetService.OnShareTargetActivated(args);
 }