static void Main(string[] args)
        {
            try
            {
                var person = new Person(new DateTime(1978, 01, 01));
                var account = person.OpenAccount(AccountTypeEnum.Investment, 50);

                account.DepositMoney(50);
                account.WithDrawMoney(90);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }

            Console.ReadKey();
        }