@Test
    @LoadGraphWith(MODERN)
    public void g_V_hasXnoX_groupCount() {
        final Traversal<Vertex, Map<Object, Long>> traversal = get_g_V_hasXnoX_groupCount();
        printTraversalForm(traversal);
        assertCommonC(traversal);
        checkSideEffects(traversal.asAdmin().getSideEffects());
    }
@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/sideEffect/GroupCountTest.java