private void write(Path metadataPath, Metadata metadata) throws RepositoryException {
        try {
            Files.createDirectories(metadataPath.getParent());
            try (OutputStream output = Files.newOutputStream(metadataPath)) {
                new MetadataStaxWriter().write(output, metadata);
            }
        } catch (IOException | XMLStreamException e) {

        }

        return sequenceOf(directory)
    }

    private
    fun aJar(sourceFiles: Sequence<Path>): Sequence<Path> {
        val outputPath = projectDir.resolve("mylib.jar")
        Files.newOutputStream(outputPath).use { outputStream ->
            JarOutputStream(outputStream).use { jarStream ->
                sourceFiles.forEach { dir ->
                    check(Files.isDirectory(dir)) { "Must be a directory" }

            } else if (outputStream != null) {
                new PluginDescriptorStaxWriter().write(outputStream, content);
            } else {
                try (OutputStream os = Files.newOutputStream(path)) {
                    new PluginDescriptorStaxWriter().write(outputStream, content);
                }
            }
        } catch (Exception e) {

            } else if (outputStream != null) {
                new MavenStaxWriter().write(outputStream, content);
            } else {
                try (OutputStream os = Files.newOutputStream(path)) {
                    new MavenStaxWriter().write(outputStream, content);
                }
            }
        } catch (Exception e) {
            throw new XmlWriterException("Unable to write model", e);

            } else if (outputStream != null) {
                new MavenStaxWriter().write(outputStream, content);
            } else {
                try (OutputStream os = Files.newOutputStream(path)) {
                    new MavenStaxWriter().write(outputStream, content);
                }
            }
        } catch (Exception e) {

            metadata.setVersion(null);
        }

        if (changed || !metadataFile.exists()) {
            metadataFile.getParentFile().mkdirs();
            try (OutputStream output = Files.newOutputStream(metadataFile.toPath())) {
                MetadataStaxWriter mappingWriter = new MetadataStaxWriter();
                mappingWriter.write(output, metadata.getDelegate());
            }
        } else {

            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);
                } catch (final Exception e) {
                    logger.warn("Failed to process a request.", e);

            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);
                } catch (final Exception e) {
                    logger.warn("Failed to process a request.", e);

            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);
                } catch (final Exception e) {
                    logger.warn("Failed to process a request.", e);

                }
            }
        }

        if (changed) {
            getLogger().debug("Repairing metadata in " + metadataFile);

            try (OutputStream out = Files.newOutputStream(metadataFile.toPath())) {
                new MetadataStaxWriter().write(out, metadata.getDelegate());
            } catch (IOException | XMLStreamException e) {