@Override
    protected void sideEffect(final Traverser.Admin<S> traverser) {
        this.consumer.accept(traverser);
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/sideEffect/LambdaSideEffectStep.java