public string Run(RequestSender requestSender, ILoggerService log)
        {
            string welcome = "  Share registration service.";

            log.Info(welcome);
            Console.WriteLine(welcome); // signal about enter into case

            int    shareTypeId = 0;
            string companyName = string.Empty;

            string inputString = string.Empty;

            while (inputString != "e")
            {
                if (string.IsNullOrEmpty(companyName))
                {
                    Console.Write("   Enter the Company name: ");
                    inputString = Console.ReadLine();
                    log.Info($"Company name input: {inputString}");
                    if (!StockExchangeValidation.checkCompanyName(inputString))
                    {
                        continue;
                    }
                    companyName = inputString;
                }

                if (shareTypeId == 0)
                {
                    Console.Write("   Enter the Id of share type: ");
                    inputString = Console.ReadLine();
                    log.Info($"Id of share type input: {inputString}");
                    int inputInt;
                    int.TryParse(inputString, out inputInt);
                    if (!StockExchangeValidation.checkId(inputInt))
                    {
                        continue;
                    }
                    shareTypeId = inputInt;
                }

                break;
            }

            if (inputString == "e")
            {
                string exitString = "Exit from registration";
                log.Info(exitString);
                return(exitString);
            }

            Console.WriteLine("    Wait a few seconds, please.");

            var shareInputData = new ShareInputData
            {
                CompanyName = companyName,
                ShareTypeId = shareTypeId
            };

            log.Info($"Created ShareInputData with CompanyName = {companyName}, ShareTypeId = { shareTypeId}");

            var reqResult = requestSender.AddShare(shareInputData);

            log.Info($"Request result: {reqResult}.");
            if (string.IsNullOrWhiteSpace(reqResult))
            {
                return("New share was added! Press Enter.");
            }
            return("Error. Share wasn't added! Press Enter.");
        }