@Override
        public Traversal<Vertex, Vertex> get_g_V_repeatXoutX_timesX2X_emit() {
            return g.V().repeat(out()).times(2).emit();
        }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-test/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/branch/RepeatTest.java