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) {

            // path to pom.xml
            File currentPom = project.getFile();
            if (currentPom != null) {
                MavenSession session = event.getSession();
                Path current = currentPom.toPath().toAbsolutePath().normalize();
                Path topDirectory = session.getTopDirectory();
                if (topDirectory != null && current.startsWith(topDirectory)) {

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

            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
    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()
        }

        File exclusionsFile = getParameters().getExclusionsFile();

        if (exclusionsFile.exists()) {
            try {
                return Files.readAllLines(exclusionsFile.toPath())
                    .stream()
                    .map(String::trim)
                    .filter(line -> (line.isEmpty() || line.startsWith("#")) == false)
                    .collect(Collectors.toList());

        );
    }

    private void writeFile(File file, String content) {
        try {
            Files.writeString(file.toPath(), content, CREATE, TRUNCATE_EXISTING);
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

    private String execInCheckoutDir(Action<ExecSpec> execSpecConfig) {

            }
        }

        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));

                    public Object getValue(String expression) {
                        if (projectDir != null && "baseUri".equals(expression)) {
                            return projectDir.getAbsoluteFile().toPath().toUri().toASCIIString();
                        }
                        return null;
                    }
                },
                PROJECT_PREFIXES,
                false);

        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