@Override
        public Traversal<Vertex, Map<String, Long>> get_g_V_unionXrepeatXoutX_timesX2X_groupCountXmX_byXlangXX__repeatXinX_timesX2X_groupCountXmX_byXnameXX_capXmX() {
            return g.V().union(
                    repeat(out()).times(2).groupCount("m").by("lang"),
                    repeat(in()).times(2).groupCount("m").by("name")).cap("m");
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/sideEffect/GroupCountTest.java