else -> null
    }
}

internal val ClassifierDescriptor.classId: ClassId?
    get() = when (val owner = containingDeclaration) {
        is PackageFragmentDescriptor -> ClassId(owner.fqName, name)
        is ClassifierDescriptorWithTypeParameters -> owner.classId?.createNestedClassId(name)
        else -> null
    }

internal val ClassifierDescriptor.maybeLocalClassId: ClassId