Implementing Interface's method on Union state

[ericodarmawanh]

Let's say that I have an interface IError which has a method to implement like this:

Now, one of my Union's state implements it. The question is: Is this the right way to implement the method? I doubt my self because now the success state has the method too. It's happened because I create the method inside the Union class.

Thank you for the answer.

[rrousselGit]

Hello!

Yes, there's no choice. If the getMessage wasn't part of the IError interface, you could use an extension instead. But because of the interface, you'll have to it as you've shown.