@Override
        public Traversal<Vertex, String> get_g_V_projectXa_b_cX_byXbothE_weight_sumX_byXbothE_countX_byXnameX_order_byXmathXa_div_bX_descX_selectXcX() {
            return g.V().project("a", "b", "c").by(bothE().values("weight").sum()).by(bothE().count()).by("name").order().by(math("a / b"), desc).select("c");
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/map/MathTest.java