title: How to get all items from the Google Maps clustermanager in iOS
body: <p>In the Android version of the Google Maps cluster manager it it possible to get the collection of markers from (see <a href="https://stackoverflow.com/questions/22449438/google-maps-utility-how-to-get-all-markers-from-clustermanager">Google Maps Utility: how to get all markers from ClusterManager&lt;?&gt;?</a>). I tried to do the same under iOS, but it doesn't work. The algoritm class doesn't expose the items array.</p>
  
  <p>Is there another way to get the items? Or should I do one of the following:</p>
  
  <ul>
  <li>Expose the items array by editing the algorithm class.</li>
  <li>Sublass the algorithm class and overwrite the <code>addItem</code>, <code>clearItems</code> etc methods, so I can maintain a shadow copy of the items array.</li>
  <li>Maintain a shadow copy in another way.</li>
  </ul>