@Override
        public Traversal<Vertex, String> get_g_V_whereXoutXcreatedX_and_outXknowsX_or_inXknowsXX_valuesXnameX() {
            return g.V().where(out("created").and().out("knows").or().in("knows")).values("name");
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/filter/WhereTest.java