@Override
        public Traversal<Vertex, Vertex> get_g_VX1X_hasXname_markoX(final Object v1Id) {
            return g.V(v1Id).has("name", "marko");
        }
@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/filter/HasTest.java