if (!outputFile.exists()) {
                    outputFile.createNewFile();
                }
                // Write some dummy content to simulate actual thumbnail
                Files.write(outputFile.toPath(), ("thumbnail-" + thumbnailId).getBytes());
                return true;
            } catch (IOException e) {
                return false;
            }
        }

        @Override

                // Copy tempFile to the actual file
                try {
                    java.nio.file.Files.copy(tempFile.toPath(), new File(file.getPath()).toPath(),
                            java.nio.file.StandardCopyOption.REPLACE_EXISTING);
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }

    private
    fun File.withUniqueDirectory(prefixPath: String): File =
        Files.createTempDirectory(
            withDirectory(prefixPath.substringBeforeLast("/")).toPath(),
            prefixPath.substringAfterLast("/")
        ).toFile()

    private
    fun File.withDirectory(path: String): File =
        resolve(path).apply {
            mkdirs()
        }

        final Path confPath = getConfPath(names);
        if (Files.exists(confPath)) {
            return confPath;
        }
        return org.codelibs.core.io.ResourceUtil.getResourceAsFile(String.join("/", names)).toPath();
    }

    /**
     * Gets the path to compiled classes directory.
     *
     * @param names the path components to append to the classes directory

        );

    private void gatherBadSnippetsInFile(File file, Map<File, List<Error>> errors) {
        List<String> lines = new ArrayList<>();
        try (java.util.stream.Stream<String> stream = Files.lines(file.toPath())) {
            stream.forEach(lines::add);
        } catch (IOException ex) {
            // If a file can't be read, add an error
            addError(errors, file, new Error(1, "Failed to read file: " + ex.getMessage()));

        validateApi(body, messages -> {});
        return asStream("badword.csv").contentTypeOctetStream().stream(out -> {
            final Path tempFile = ComponentUtil.getSystemHelper().createTempFile("fess-badword-", ".csv").toPath();
            try {
                try (Writer writer = new BufferedWriter(new OutputStreamWriter(Files.newOutputStream(tempFile), getCsvEncoding()))) {
                    badWordService.exportCsv(writer);

                            final File baseJspFile = getDesignJspFile("/WEB-INF/view/" + e.getValue());
                            try {
                                final Path jspPath = jspFile.toPath();
                                Files.copy(baseJspFile.toPath(), jspPath);
                                fileList.add(jspPath);
                            } catch (final IOException ex) {

            return nameSet.stream().sorted().collect(Collectors.toList());
        }
        for (final File jarFile : jarFiles) {
            try (FileSystem fs = FileSystems.newFileSystem(jarFile.toPath(), ClassLoader.getSystemClassLoader())) {
                final Path xmlPath = fs.getPath("fess_ds++.xml");
                if (!Files.exists(xmlPath)) {
                    if (logger.isDebugEnabled()) {

            }
        }

        private String getPackageName(File file) throws IOException {
            try (Stream<String> lines = Files.lines(file.toPath())) {
                String packageLine = lines.filter(line -> line.startsWith("package"))
                    .findFirst()
                    .orElseThrow(() -> new IOException("Can't find package definition in file " + file));

        File psOutFile = new File(rootProjectDir, timestamp + ".psoutput");

        try {
            Files.write(psOutFile.toPath(), psOutput);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    private static void cleanPsOutputAndThreaddumpFilesFromPreviousRun(File rootProjectDir) {