@Override
        public Traversal<Vertex, Map.Entry<String, Number>> get_g_V_hasLabelXpersonX_group_byXnameX_byXoutE_weight_sumX_unfold_order_byXvalues_descX() {
            return g.V().hasLabel("person").group().by("name").by(outE().values("weight").sum()).<Map.Entry<String, Number>>unfold().order().by(Column.values, desc);
        }
@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/map/OrderTest.java