I’m wrapping an `actor` of one type with another, ...

# coroutines

[zak.taccardi]

I’m wrapping an actor of one type with another, but struggling with the SendChannel#selectClause. How can I implement the following?

private val _onSend: SelectClause2<StateActorIntention<S, I>, SendChannel<StateActorIntention<S, I>>> = actor.onSend
 // how do I forward onSend to `_onSend` without using `@InternalCoroutinesApi`?
 override val onSend: SelectClause2<I, SendChannel<I>> get() = TODO("??")

[zak.taccardi]

see https://github.com/Kotlin/kotlinx.coroutines/issues/1991