@Override
        public final FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
            collector.recordVisitFile();
            return doVisitFile(file, attrs);
        }

        protected abstract FileVisitResult doVisitFile(Path file, BasicFileAttributes attrs);

        @Override
        public final FileVisitResult visitFileFailed(Path file, IOException exc) {

            }
            parentDirectories.removeFirst();
            return FileVisitResult.CONTINUE;
        }

        @Override
        protected FileVisitResult doVisitFile(Path file, BasicFileAttributes attrs) {
            String internedFileName = getInternedFileName(file);
            pathTracker.enter(internedFileName);
            try {
                if (attrs.isSymbolicLink()) {