while (matcher.find()) {
            MatchResult xrefMatcher = matcher.toMatchResult();
            String link = xrefMatcher.group(1);
            String fileName = getFileName(link, sourceFile);
            File referencedFile = new File(getDocumentationRoot().get().getAsFile(), fileName);
            if (!referencedFile.exists()) {

        }

        @Override
        public int getFileSize() {
            return (int) fileItem.getSize();
        }

        @Override
        public String getFileName() {
            return getBaseFileName(fileItem.getName());
        }

        protected String getBaseFileName(final String filePath) {
            final String fileName = new File(filePath).getName();

     *
     * @param artifact the artifact to install
     * @throws PluginException if installation fails
     */
    protected void install(final Artifact artifact) {
        final String fileName = artifact.getFileName();
        final String url = artifact.getUrl();
        if (StringUtil.isBlank(url)) {
            throw new PluginException("url is blank: " + artifact.getName());
        }

        final String body = getSingleNodeValue(document, getContentXpath(fessConfig, xpathConfigMap),
                prunedContent ? node -> pruneNode(node, crawlingConfig) : node -> node);
        final String fileName = getFileName(url, urlEncoding);
        putResultDataContent(dataMap, responseData, fessConfig, crawlingConfig, documentHelper, body, fileName);
        if ((fieldConfigs.getConfig(fessConfig.getIndexFieldCache())

            try (Stream<Path> stream = Files.list(logDirPath)) {
                stream.filter(entry -> isLogFilename(entry.getFileName().toString())).forEach(filePath -> {
                    final ZipEntry entry = new ZipEntry(id + "/" + filePath.getFileName().toString());
                    try {
                        zos.putNextEntry(entry);
                        final long len = Files.copy(filePath, zos);

        assertEquals("test", artifact.getName());
        assertEquals("1.0.0", artifact.getVersion());
        assertEquals("http://test.com/test.jar", artifact.getUrl());
        assertEquals("test-1.0.0.jar", artifact.getFileName());
        assertEquals(ArtifactType.UNKNOWN, artifact.getType());
    }

    @Test
    public void test_Artifact_constructorWithoutUrl() {
        Artifact artifact = new Artifact("test", "1.0.0");

        }
        final Path result =
                indexExportJob.buildFilePath("/export", "https://example.com/" + longName + ".html", new HtmlIndexExportFormatter());
        final String fileName = result.getFileName().toString();
        assertTrue(fileName.length() <= 200);
    }

    @Test
    public void test_buildFilePath_invalidUrl() {