@Override
        public Traversal<Vertex, Map<String, Object>> get_g_V_valueMap_matchXa_selectXnameX_bX() {
            return g.V().valueMap().match(as("a").select("name").as("b"));
        }
@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