@Override
        public Traversal<Vertex, Collection> get_g_V_aggregateXlocal_aX_byXnameX_out_capXaX() {
            return g.V().aggregate(Scope.local, "a").by("name").out().cap("a");
        }
@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/AggregateTest.java