title: OpenLayers: how can be ol.FeatureOverlay replaced in 3.13v?
body: <p><a href="https://openlayersbook.github.io/ch06-styling-vector-layers/example-08.html" rel="nofollow">Here</a> there is an overlay feature example.</p>
  
  <p>It doesn't work on 3.13 OpenLayers version because of no more supported ol.FeatureOverlay.</p>
  
  <p>How can be it replaced? Could you give me an example?</p>