static void Main(string[] args)
        {
            BankAccount obb = new BankAccount();

            obb.Id      = 1230001;
            obb.Balance = 550.02m;
            BankAccount ktb = new BankAccount();

            ktb.Id      = 40234134;
            ktb.Balance = 3m;
            List <BankAccount> accounts = new List <BankAccount> {
                obb, ktb
            };

            Person stoyan = new Person("Stoyan", 23, accounts);

            Console.WriteLine(stoyan.GetBalance());
        }