/// <summary>
        /// Downloads daily historical stock data.
        /// </summary>
        public string HistoricalDataDownload(string stock, string startDate, WebClient web, WebURIs uRIs, DateTime date, PeregrineOperation peregrine, Transactions transactions)
        {
            string endDate = date.ToShortDateString();

            string stockData = web.DownloadString(uRIs.WSJHistorical(stock, startDate, endDate)); // method call to retrieve the data

            return(stockData);
        }
        /// <summary>
        /// The Trading Days method allows the program to validate if the file being downloaded holds the correct amount of data. I am using five of the largest
        /// stocks which are heavily tracked. It is unlikely that there will not be historical data on these five stocks, making them a good bench mark.
        /// </summary>
        /// <param name="numberDays"></param>
        /// <returns></returns>
        private int tradingDays(string startDate, WebClient web, WebURIs uRIs, DateTime date)
        {
            List <string> FAANG = new List <string> {
                "FB", "AAPL", "AMZN", "NFLX", "GOOGL"
            };             // Top Tech stocks: Facebook, Apple, Amazon, NetFlix, Google

            int count = 0; // count of the total trading days recorded for FAANG over the period.

            foreach (var item in FAANG)
            {
                //              (website location  (stock requested, startdate, enddate) splitting by the return symbol > places it into an array > counts the array elements
                int rows = web.DownloadString(uRIs.WSJHistorical(item, startDate, date.ToShortDateString())).Split('\n').ToArray().Count();
                count += rows; // count = count(current) + rows
            }
            int tradingDays = count / 5;

            return(tradingDays);
        }