Merge pull request #3272 from acanimal/3267

Added getter function to return the wrapped source within the cluster

src/ol/source/clustersource.js

@@ -59,6 +59,16 @@ ol.source.Cluster = function(options) {
 goog.inherits(ol.source.Cluster, ol.source.Vector);
 
 
+/**
+ * Get a reference to the wrapped source.
+ * @return {ol.source.Vector} Source.
+ * @api
+ */
+ol.source.Cluster.prototype.getSource = function() {
+  return this.source_;
+};
+
+
 /**
  * @inheritDoc
  */

src/ol/source/imagevectorsource.js

@@ -178,6 +178,7 @@ ol.source.ImageVector.prototype.forEachFeatureAtCoordinate = function(
 
 
 /**
+ * Get a reference to the wrapped source.
  * @return {ol.source.Vector} Source.
  * @api
  */