better_code.swift

class ConsumerViewController: UIViewController {
  
  override func viewDidLoad() {
    super.viewDidLoad()
    
    let webViewBox = createWebView(usingModern: true)
    // add webView to the view hierachy
    webViewBox.load(urlRequest: URLRequest(url: URL(string: "www.google.it")!))
  }
  
  private func createWebView(usingModern: Bool) -> WebViewBox {
    if usingModern {
      return WebViewBox(view: ModernWebView())
    }
    return WebViewBox(view: LegacyWebView())
  }
  
}