protocol NibLoadable {
  static var nibName: String? { get }
  static func createFromNib(in bundle: Bundle) -> Self?
}

extension NibLoadable where Self: NSView {

  static var nibName: String? {
    return String(describing: Self.self)
  }

  static func createFromNib(in bundle: Bundle = Bundle.main) -> Self? {
    guard let nibName = nibName else { return nil }
    var topLevelArray: NSArray? = nil
    bundle.loadNibNamed(NSNib.Name(nibName), owner: self, topLevelObjects: &topLevelArray)
    guard let results = topLevelArray else { return nil }
//    let views = Array<Any>(results).filter { $0 is Self }
//    return views.last as? Self
    let element =      results[0] as? Self

    return results[0] as? Self
  }
}