@Override
        public Traversal<Vertex, Edge> get_g_V_asXaX_outXcreatedX_inXcreatedX_whereXneqXaXX_asXbX_addEXcodeveloperX_fromXaX_toXbX_propertyXyear_2009X() {
            return g.V().as("a").out("created").in("created").where(P.neq("a")).as("b").addE("codeveloper").from("a").to("b").property("year", 2009);
        }
@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/AddEdgeTest.java