static void Main(string[] args)
        {
            var store = new CustomerStore();
            // user wants to add a customer
            var createCustomerCommand = new CreateCustomerCommand(store, "Magesh");

            createCustomerCommand.Execute();
        }
 static void Main(string[] args)
 {
     var store = new CustomerStore();
     // user wants to add a customer
     var createCustomerCommand = new CreateCustomerCommand(store, "Magesh");
     createCustomerCommand.Execute();
 }