(string selector = null)         {             return nextPrevImpl(selector, true);         }          /// <summary>         /// Get all following siblings of each element in the set of matched elements, optionally         /// filtered by a selector.         /// </summary>         ///         /// <param name="filter">         /// A selector that must match each element returned.         /// </param>         ///         /// <returns>         /// A new CQ object         /// </returns>         ///         /// <url>         /// http://api.jquery.com/next