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

        public open override fun foo(): R|kotlin/Unit| {
        }

    }
FILE: A.kt
    public abstract class A : R|kotlin/Any| {
        public constructor(): R|A| {
            super<R|kotlin/Any|>()
        }

        public abstract fun foo(): R|kotlin/Unit|

    }