@Test
    public void shouldAcceptPrimitiveArrayTraverser() {
        List result = (List) __.__(new long[] {10L, 7L}).reverse().next();
        assertEquals(7L, result.get(0));
        assertEquals(10L, result.get(1));
        assertEquals(2, result.size());
    }
@author Yang Xia (http://github.com/xiazcy)
gremlin-core/src/test/java/org/apache/tinkerpop/gremlin/process/traversal/step/map/ReverseStepTest.java