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

    }
    public final fun foo(): R|A?| {
        ^foo Null(null)
    }
    public final fun main(): R|kotlin/Unit| {
        lval w: R|kotlin/Any| = R|/foo|() ?: Q|java/lang|.R|java/lang/Object.Object|()
        R|<local>/w|.R|kotlin/Any.hashCode|()
    }