Using enumerations to restrict choices in customer API

CustomerAPI.cs

public enum CustomerType
{
  NEW_CUSTOMER,
  REWARDS_CUSTOMER,
  REGULAR_CUSTOMER
}

public void LoginAsCustomer(LoginInfo loginInfo, CustomerType customerType, int numberOfTries)
{
  // ...
}
 
var loginInfo = new LoginInfo("Darth Vader", "ihatewookes");
LoginAsCustomer(loginInfo, CustomerType.NEW_CUSTOMER, 3);