@Override
        public Traversal<Vertex, Object> get_g_V_matchXa_out_bX_selectXb_idX() {
            return g.V().match(as("a").out().as("b")).select("b").by(T.id);
        }
@author Joshua Shinavier (http://fortytwo.net)
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/map/MatchTest.java