@Test
    @LoadGraphWith(MODERN)
    public void g_withSackX0X_V_repeatXoutE_sackXsumX_byXweightX_inVX_timesX2X_sack() {
        final Traversal<Vertex, Double> traversal = get_g_withSackX0X_V_repeatXoutE_sackXsumX_byXweightX_inVX_timesX2X_sack();
        printTraversalForm(traversal);
        checkResults(Arrays.asList(2.0d, 1.4d), traversal);
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/sideEffect/SackTest.java