title: How to group marker using Cluster in Google Map in Swift?
body: <p>I build my application have google map function. How can i group the marker (you can see the image) by using cluster. Anyone please show me how to do it? Thank a lot</p>
  
  <p><a href="https://i.stack.imgur.com/2o6aZ.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2o6aZ.jpg" alt="my marker"></a></p>
  
  <p><a href="https://i.stack.imgur.com/yeCps.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yeCps.jpg" alt="enter image description here"></a></p>