I guess you could make interfaces for every field ...

# android-architecture

[tschuchort]

I guess you could make interfaces for every field of the User and then simulate structural typing by parameterizing your methods and constraining them to a union of the interfaces:

interface UserId { val id: Int }
interface UserName { name: String }
fun <T> foo(user: T) where T : UserId, T : UserName {}

But this is hardly scalable