Merge pull request #2450 from probins/events

Improve and standardise event docs

src/ol/source/vectorsource.js

@@ -484,6 +484,10 @@ ol.source.Vector.prototype.removeFromIdIndex_ = function(feature) {
 
 
 /**
+ * @classdesc
+ * Events emitted by {@link ol.source.Vector} instances are instances of this
+ * type.
+ *
  * @constructor
  * @extends {goog.events.Event}
  * @implements {oli.source.VectorEvent}