import kotlin.reflect.*

class A

fun foo() {}
fun bar(<!UNUSED_PARAMETER!>x<!>: Int) {}
fun baz() = "OK"

fun A.main() {
    val x = ::foo
    val y = ::bar
    val z = ::baz

    x : KFunction0<Unit>
    y : KFunction1<Int, Unit>
    z : KFunction0<String>
}