*
   * @deprecated Use {@link com.google.common.graph.Traverser#breadthFirst} instead, which has the
   *     same behavior.
   */
  @Deprecated
  public final FluentIterable<T> breadthFirstTraversal(final T root) {
    checkNotNull(root);
    return new FluentIterable<T>() {
      @Override
      public UnmodifiableIterator<T> iterator() {
        return new BreadthFirstIterator(root);
      }