title: How to get iPhone Maps app blue dot with light blue field for current location?
body: <p>I think the title is quite self explanatory. Currently when I add a default annotation for current location:</p>
  
  <pre><code>let currentAnnot = MKPointAnnotation()
  currentAnnot.coordinate = loc.coordinate
  mainMap.addAnnotation(currentAnnot)
  </code></pre>
  
  <p>It is giving me a red pin. I want the same blue dot with light blue field which the Apple iPhone Maps app is using by default. Is there a special name for that and how can I add it?</p>