Add ol.FeaturesOverlay#addFeature

src/ol/render/featuresoverlay.exports

@@ -1,4 +1,5 @@
 @exportSymbol ol.render.FeaturesOverlay
+@exportProperty ol.render.FeaturesOverlay.prototype.addFeature
 @exportProperty ol.render.FeaturesOverlay.prototype.getFeatures
 @exportProperty ol.render.FeaturesOverlay.prototype.setFeatures
 @exportProperty ol.render.FeaturesOverlay.prototype.setMap

src/ol/render/featuresoverlay.js

@@ -77,6 +77,14 @@ ol.render.FeaturesOverlay = function(opt_options) {
 };
 
 
+/**
+ * @param {ol.Feature} feature Feature.
+ */
+ol.render.FeaturesOverlay.prototype.addFeature = function(feature) {
+  this.features_.push(feature);
+};
+
+
 /**
  * @return {ol.Collection} Features collection.
  */