Index: trunk/src/org/openstreetmap/josm/data/osm/MultipolygonBuilder.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/osm/MultipolygonBuilder.java	(revision 10942)
+++ trunk/src/org/openstreetmap/josm/data/osm/MultipolygonBuilder.java	(revision 10943)
@@ -174,5 +174,5 @@
      * @throws JoinedPolygonCreationException if the creation fails.
      */
-    public static Pair<List<JoinedPolygon>, List<JoinedPolygon>> joinWays(Relation multipolygon) throws JoinedPolygonCreationException {
+    public static Pair<List<JoinedPolygon>, List<JoinedPolygon>> joinWays(Relation multipolygon) {
         CheckParameterUtil.ensureThat(multipolygon.isMultipolygon(), "multipolygon.isMultipolygon");
         final Map<String, Set<Way>> members = multipolygon.getMembers().stream()