@Override
    protected List<Traversal> getTraversals() {
        return Arrays.asList(
                __.values(),
                __.values("name"),
                __.values("age"),
                __.values("name", "age"),
                __.properties(),
                __.properties("name"),
                __.properties("age"),
                __.properties("name", "age")
        );
    }
@author Daniel Kuppitz (http://gremlin.guru)
gremlin-core/src/test/java/org/apache/tinkerpop/gremlin/process/traversal/step/map/PropertiesStepTest.java