title: Customize MKAnnotation Callout View?
body: <p>I have a <code>MKPointAnnotation</code>:</p>
  
  <pre><code>let ann = MKPointAnnotation()
  self.ann.coordinate = annLoc
  self.ann.title = "Customize me"
  self.ann.subtitle = "???"
  self.mapView.addAnnotation(ann)
  </code></pre>
  
  <p>It looks like this: </p>
  
  <p><img src="https://i.stack.imgur.com/jQci6.png" alt="enter image description here"></p>
  
  <p><strong>How can I customize this callout view to create my own view instead of the predefined one?</strong></p>