Index: src/org/openstreetmap/josm/data/osm/UniqueIdGenerator.java
===================================================================
--- src/org/openstreetmap/josm/data/osm/UniqueIdGenerator.java	(revision 16107)
+++ src/org/openstreetmap/josm/data/osm/UniqueIdGenerator.java	(working copy)
@@ -15,7 +15,7 @@
      * Generates a new primitive unique id.
      * @return new primitive unique (negative) id
      */
-    long generateUniqueId() {
+    public long generateUniqueId() {
         return idCounter.decrementAndGet();
     }