PrimitiveObsessionFixed.cs

PrimitiveObsessionFixed.cs

public class Customer
{
    public int Id { get; set; }
    public FirstName FirstName { get; set; }
    public LastName LastName { get; set; }
    public Email Email { get; set; }
    public SSN SSN { get; set; }
}

public class RegisterCustomerUseCase
{
    public void Execute(
        FirstName firstName,
        LastName lastName,
        Email email,
        SSN ssn)
    {

    }
}