Index: trunk/src/org/openstreetmap/josm/gui/layer/OsmDataLayer.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/layer/OsmDataLayer.java	(revision 13548)
+++ trunk/src/org/openstreetmap/josm/gui/layer/OsmDataLayer.java	(revision 13558)
@@ -415,4 +415,13 @@
 
     /**
+     * Returns the {@link DataSet} behind this layer.
+     * @return the {@link DataSet} behind this layer.
+     * @since 13558
+     */
+    public DataSet getDataSet() {
+        return data;
+    }
+
+    /**
      * Return the image provider to get the base icon
      * @return image provider class which can be modified