title: Openlayers 6 get geometry of a modified feature
body: <p>How can I get the new feature geometry after its modification in Openlayers 6?  I'm listening to the <strong>modifyend</strong> event.</p>
  <p>The source contains around 100 features. How can I do this?</p>
  <pre><code>var modify = new ol.interaction.Modify({
         source: map_features_source
  });
  
  modify.on('modifyend', function (evt) {
         console.log(evt.target);
  });
  
  map.addInteraction(modify);
  </code></pre>
  <p>I tried this:</p>
  <pre><code>evt.features.getArray()[0].getGeometry().getCoordinates()
  </code></pre>
  <p>but it's not working as I have many elements in the array <strong>evt.features.getArray()</strong>. I need to find the one that was modified.</p>