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

        public open override fun foo(name: R|kotlin/String|): R|Base| {
            ^foo this@R|/Impl|
        }

    }
FILE: test.kt
    public abstract class ImplDerived : R|Impl|, R|Derived| {
        public constructor(): R|ImplDerived| {
            super<R|Impl|>()
        }

        public abstract override fun foo(name: R|kotlin/String?|): R|Derived|

    }
    public abstract class DerivedImpl : R|Derived|, R|Impl| {
        public constructor(): R|DerivedImpl| {
            super<R|Impl|>()
        }

        public abstract override fun foo(name: R|kotlin/String?|): R|Derived|

    }