// Find the first ClassId matching inner class. If the first matching one is this scope's ClassId, it means this scope is closer
        // than `another`.
        val candidates = setOfNotNull(classId, classIdOfAnother, classId.idWithoutCompanion(), classIdOfAnother.idWithoutCompanion())
        val closestClassId = findMostInnerClassMatchingId(from, candidates)