@Test
    @LoadGraphWith(MODERN)
    @FeatureRequirement(featureClass = Graph.Features.VertexFeatures.class, feature = Graph.Features.VertexFeatures.FEATURE_REMOVE_VERTICES)
    public void g_V_drop() {
        final Traversal<Vertex, Vertex> traversal = get_g_V_drop();
        printTraversalForm(traversal);
        assertFalse(traversal.hasNext());
        assertEquals(0, IteratorUtils.count(g.V()));
        assertEquals(0, IteratorUtils.count(g.E()));
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/filter/DropTest.java