FILE: typeArgumentsOnThis.kt
    public final fun x(): R|kotlin/Unit| {
        this#.<Unresolved name: invoke>#<<ERROR TYPE REF: Symbol not found for X>>::<Unresolved reference: y>#
    }
    public final val a: <ERROR TYPE REF: Unresolved reference: y> = this#.<Unresolved name: invoke>#<<ERROR TYPE REF: Symbol not found for X>>::<Unresolved reference: y>#
        public get(): <ERROR TYPE REF: Unresolved reference: y>
