@Override
    protected List<Traversal> getTraversals() {
        return Arrays.asList(
                __.order(Scope.local),
                __.order(Scope.local).by(Order.desc),
                __.order(Scope.local).by("age", Order.asc),
                __.order(Scope.local).by("age", Order.desc),
                __.order(Scope.local).by(outE().count(), Order.asc),
                __.order(Scope.local).by("age", Order.asc).by(outE().count(), Order.asc),
                __.order(Scope.local).by(outE().count(), Order.asc).by("age", Order.asc)
        );
    }
@author Daniel Kuppitz (http://gremlin.guru)
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-core/src/test/java/org/apache/tinkerpop/gremlin/process/traversal/step/map/OrderLocalStepTest.java