@Override
    public String toString() {
        return "(" + Objects.toString(this.end) + ")";
    }
A {@link Traversal} that always returns a constant value.

@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/lambda/ConstantTraversal.java