@Override
    public Admin<T> split() {
        final O_Traverser<T> clone = (O_Traverser<T>) super.split();
        if (null != this.tags)
            clone.tags = new HashSet<>(this.tags);
        return clone;
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/traverser/O_Traverser.java