title: How to check if Link is broken with WKWebview?
body: <p>I use <code>WKWebview</code> to load a URL. </p>
  
  <pre><code>let webView = WKWebview()
  let request: NSMutableURLRequest = NSMutableURLRequest(URL: url!)
  webView.loadRequest(request)
  </code></pre>
  
  <p><strong>How can I detect if the link the webView should load is broken?</strong></p>