@Test
    @LoadGraphWith(MODERN)
    public void g_V_hasXage_isXgt_30XX() {
        final Traversal<Vertex, Vertex> traversal = get_g_V_hasXage_isXgt_30XX();
        printTraversalForm(traversal);
        final List<Vertex> list = traversal.toList();
        assertEquals(2, list.size());
        for (final Element v : list) {
            assertTrue(v.<Integer>value("age") > 30);
        }
    }
@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