abstract class RustNavigationContributorBase<T> protected constructor(
        private val indexKey: StubIndexKey<String, T>,
        private val clazz: Class<T>
) : ChooseByNameContributor, GotoClassContributor
where T : NavigationItem,
T : RustNamedElement {
}

fun <T> foo()
where T : NavigationItem,
T : RustNamedElement {
}

interface Bound1
interface Bound2
class WhereClass1<T>where T : Bound1, T : Bound2