title: How set rootViewController in Scene Delegate iOS 13
body: <p>Before changes in UIKit iOS 13 how I can set rootViewController at SceneDelegate?</p>
  
  <pre><code>class SceneDelegate: UIResponder, UIWindowSceneDelegate {
  
      var window: UIWindow?
  
  
      @available(iOS 13.0, *)
      func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
          guard let _ = (scene as? UIWindowScene) else { return }
  
      }
  </code></pre>