@Override
        public Traversal<Vertex, Map> get_g_withSackXmap__map_cloneX_V_out_out_sackXmap_a_nameX_sack() {
            return g.<HashMap>withSack(HashMap::new, m -> (HashMap) m.clone()).V().out().out().<Map, Vertex>sack((map, vertex) -> {
                map.put("a", vertex.value("name"));
                return map;
            }).sack();
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/sideEffect/SackTest.java