public IEnumerable<HistoricalPrice> Process(HistoricalPriceResponse response)
        {
            var rows = csv_response_parser.ParseToRows(response.WebResponse);

            return rows.Rows.Select(x => new HistoricalPrice(DateTime.Parse((string)x.Date, new CultureInfo("en-US")), Decimal.Parse(x.Close, new CultureInfo("en-US")))).ToList();
        }
        public IEnumerable <HistoricalPrice> Process(HistoricalPriceResponse response)
        {
            var rows = csv_response_parser.ParseToRows(response.WebResponse);

            return(rows.Rows.Select(x => new HistoricalPrice(DateTime.Parse((string)x.Date, new CultureInfo("en-US")), Decimal.Parse(x.Close, new CultureInfo("en-US")))).ToList());
        }