@Test
    @LoadGraphWith(MODERN)
    public void g_V_hasLabelXsoftwareX_group_byXnameX_byXbothE_weight_meanX() {
        final Traversal<Vertex, Map<String, Number>> traversal = get_g_V_hasLabelXsoftwareX_group_byXnameX_byXbothE_weight_meanX();
        printTraversalForm(traversal);
        assertTrue(traversal.hasNext());
        final Map<String, Number> map = traversal.next();
        assertFalse(traversal.hasNext());
        assertEquals(2, map.size());
        assertEquals(1.0, map.get("ripple"));
        assertEquals(1.0 / 3, map.get("lop"));
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/map/MeanTest.java