@Override
    public void setSideEffects(final TraversalSideEffects sideEffects) {
        if (null != this.bypassTraversal)
            this.bypassTraversal.setSideEffects(sideEffects);
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/lambda/AbstractLambdaTraversal.java