@Override
        public Traversal<Vertex, Map<String, Object>> get_g_V_asXaX_outXcreatedX_asXbX_inXcreatedX_asXcX_bothXknowsX_bothXknowsX_asXdX_whereXc__notXeqXaX_orXeqXdXXXX_selectXa_b_c_dX() {
            return g.V().as("a").out("created").as("b").in("created").as("c").both("knows").both("knows").as("d").where("c", P.not(P.eq("a").or(P.eq("d")))).select("a", "b", "c", "d");
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/filter/WhereTest.java