@Test
    @LoadGraphWith(MODERN)
    @FeatureRequirement(featureClass = Graph.Features.VertexFeatures.class, feature = Graph.Features.VertexFeatures.FEATURE_ADD_VERTICES)
    @FeatureRequirement(featureClass = Graph.Features.VertexFeatures.class, feature = Graph.Features.VertexFeatures.FEATURE_ADD_PROPERTY)
    public void g_V_addVXanimalX_propertyXage_0X() {
        final Traversal<Vertex, Vertex> traversal = get_g_V_addVXanimalX_propertyXage_0X();
        printTraversalForm(traversal);
        int count = 0;
        while (traversal.hasNext()) {
            final Vertex vertex = traversal.next();
            assertEquals("animal", vertex.label());
            assertEquals(0, vertex.<Integer>value("age").intValue());
            count++;
        }
        assertEquals(6, count);
        assertEquals(12, IteratorUtils.count(g.V()));

    }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/map/AddVertexTest.java