public static void Main(string[] args)
        {
            AbstractCustomer customer1 = CustomerFactory.getCustomer("Rob");
            AbstractCustomer customer2 = CustomerFactory.getCustomer("Bob");
            AbstractCustomer customer3 = CustomerFactory.getCustomer("Julie");
            AbstractCustomer customer4 = CustomerFactory.getCustomer("Laura");

            Console.WriteLine("Customers");
            Console.WriteLine(customer1.getName());
            Console.WriteLine(customer2.getName());
            Console.WriteLine(customer3.getName());
            Console.WriteLine(customer4.getName());
        }