   
   let storyboard: Storyboard = {
     let bundle = Bundle(for: DipUITests.self)
-    return Storyboard(name: NSStoryboard.Name(storyboardName), bundle: bundle)
+    return Storyboard(name: StoryboardName(storyboardName), bundle: bundle)
   }()
   
   func testThatViewControllerHasDipTagProperty() {

  import AppKit
  typealias Storyboard = NSStoryboard
  typealias ViewController = NSViewController
  
  extension NSStoryboard {
    @discardableResult func instantiateViewControllerWithIdentifier(_ identifier: String) -> NSViewController {

  import UIKit
  typealias Storyboard = UIStoryboard
  typealias ViewController = UIViewController
  typealias StoryboardName = String
  
  extension UIStoryboard {
    @nonobjc
