@Override
        public Traversal<Vertex, Number> get_g_VX1_2X_localXunionXcountXX(final Object v1Id, final Object v2Id) {
            return g.V(v1Id, v2Id).local(union((Traversal) count()));
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/branch/UnionTest.java