-class DraggedIsolatedFileSystem FINAL : public NoBaseWillBeGarbageCollectedFinalized<DraggedIsolatedFileSystem>, public WillBeHeapSupplement<DataObject> {
+class DraggedIsolatedFileSystem final : public NoBaseWillBeGarbageCollectedFinalized<DraggedIsolatedFileSystem>, public WillBeHeapSupplement<DataObject> {