public static string Symbol(this TradePairModel model)
        {
            if (model == null)
            {
                return(string.Empty);
            }

            return(model.Name.Split('/')[0]);
        }
        public static string MarketUrl(this TradePairModel model)
        {
            if (model == null)
            {
                return(string.Empty);
            }

            return(model.Name.Replace('/', '_'));
        }