@Override
    protected List<Traversal> getTraversals() {
        return Arrays.asList(
                __.local(out()),
                __.local(out("knows")),
                __.local(in())
        );
    }
@author Daniel Kuppitz (http://gremlin.guru)
gremlin-core/src/test/java/org/apache/tinkerpop/gremlin/process/traversal/step/branch/LocalStepTest.java