/// <summary>
        /// 
        /// </summary>
        /// <param name="nodeUrlService"></param>
        /// <exception cref="ArgumentNullException"></exception>
        public NodeUrl(INodeUrlService nodeUrlService)
        {
            // validate arguments
            if (nodeUrlService == null)
                throw new ArgumentNullException("nodeUrlService");

            // set values
            this.nodeUrlService = nodeUrlService;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="parser"></param>
        /// <param name="nodeUrlService"></param>
        /// <exception cref="ArgumentNullException"></exception>
        public RetrieveNodeByUrlTag(IQueryParser parser, INodeUrlService nodeUrlService)
            : base(parser)
        {
            // validate arguments
            if (nodeUrlService == null)
                throw new ArgumentNullException("nodeUrlService");

            // set values
            this.nodeUrlService = nodeUrlService;
        }