Switching over duplicate enum case names won't compile

enum PictureImport {
    case add(image: UIImage)
    case add(data: Data)
}

func importImage(_ importedImage: PictureImport) {
    switch importedImage {
    case .add(image: let image): // Error: Tuple pattern element label 'image' must be 'data'
        // ...
    case .add(data: let data):
        // ...
    }
}