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

        public final operator fun plus(f: R|Foo|): R|Foo| {
        }

        public final operator fun plusAssign(f: R|Foo|): R|kotlin/Unit| {
        }

    }
    public final fun test(): R|kotlin/Unit| {
        lvar f: R|Foo| = R|/Foo.Foo|()
        ERROR_EXPR(Operator overload ambiguity. Compatible candidates: [/Foo.plus, /Foo.plusAssign])
    }
