public static string[]? GetFileDrop(this IReadFromClipboard clip) => clip.GetData(DataFormats.FileDrop) as string[];
public static BitmapSource?GetImage(this IReadFromClipboard clip) => clip.GetData(DataFormats.Bitmap) as BitmapSource;
public static Stream?GetAudio(this IReadFromClipboard clip) => clip.GetData(DataFormats.WaveAudio) as Stream;