protected FileVisitResult doPreVisitDirectory(Path dir, BasicFileAttributes attrs) {
            String fileName = getInternedFileName(dir);
            pathTracker.enter(fileName);
            if (shouldVisitDirectory(dir, fileName)) {
                String internedRemappedAbsolutePath = intern(symbolicLinkMapping.remapAbsolutePath(dir));

                // TODO Reuse previous directory snapshot even when filtering is enabled