Should I override hash If I use primary key?

[emreond]

Hello,

I need to implement Hashable protocol to one of my model classes. As I searched, Object protocol is already implement it. I have a string object which I use as a primary key. I use library called DeepDiff and It needs custom hash (If It is set by primary key, It is also okey).

When I try to implement below code, I get below error. Should I implement this method or Realm is handling hashing already?

Overriding declarations in extensions is not supported

   func hash(into hasher: inout Hasher) {
        hasher.combine(identifier)
    }