@Override
        public Traversal<Vertex, Map<String, Map<Object, Object>>> get_g_V_repeatXunionXoutXknowsX_groupXaX_byXageX__outXcreatedX_groupXbX_byXnameX_byXcountXX_groupXaX_byXnameXX_timesX2X_capXa_bX() {
            return g.V().repeat(__.union(__.out("knows").group("a").by("age"), __.out("created").group("b").by("name").by(count())).group("a").by("name")).times(2).cap("a", "b");
        }
@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/GroupTest.java