gistfile1.txt

class User(val id: Int, val name: String, val age: Int, val email: String) {

        class Deserializer : Deserializable<User> {
            override val deserializer: (JSON) -> Result<User, Exception> = { json ->
                ::User.create.
                        map(json at "id").
                        apply(json at "name").
                        apply(json at "age").
                        apply(json at "email")
            }
        }
}