Код-ревью: загрузчик картинок на Swift Concurrency

final class ImageLoader {
    static let shared = ImageLoader()
    private var cache: [URL: UIImage] = [:]

    func image(for url: URL) async throws -> UIImage {
        if let cached = cache[url] { return cached }
        let (data, _) = try await URLSession.shared.data(from: url)
        let image = UIImage(data: data)!
        cache[url] = image
        return image
    }
}

final class AvatarView: UIImageView {
    func show(_ url: URL) {
        Task.detached {
            let img = try? await ImageLoader.shared.image(for: url)
            self.image = img
        }
    }
}