FILE: B.kt
    public final class B : R|A| {
        public constructor(): super<R|A|>()

        public final override function foo(): R|B| {
            return@@@foo this#
        }

        public final function bar(): R|B| {
            return@@@bar this#
        }

        public final function test(): R|kotlin/Unit| {
            R|/B.foo|()
            <Ambiguity: bar, [/B.bar, /A.bar]>#()
        }

    }