@Override
        public Traversal<Vertex, String> get_g_V_outXcreatedX_order_byXnameX_coalesceXname_constantXxXX() {
            return g.V().out("created").order().by("name").coalesce(values("name"), constant("x"));
        }
@author Daniel Kuppitz (http://gremlin.guru)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/map/CoalesceTest.java