try {
            final File tempDir = File.createTempFile("crawlerDocRoot", "");
            tempDir.delete();
            tempDir.mkdirs();

            // robots.txt
            StringBuilder buf = new StringBuilder();
            buf.append("User-agent: *").append('\n');
            buf.append("Disallow: /admin/").append('\n');
            buf.append("Disallow: /websvn/").append('\n');

         */
        public String execute() {
            if (reader == null) {
                return StringUtil.EMPTY;
            }
            final StringBuilder buf = new StringBuilder(initialCapacity);
            boolean isSpace = false;
            int alphanumSize = 0;
            int symbolSize = 0;
            int c;
            final Set<String> termCache = new HashSet<>(1000);

     *
     * @param keyObj the crawler object
     * @param time the timestamp to include
     * @return a StringBuilder with basic log information
     */
    private StringBuilder createStringBuffer(final Object keyObj, final long time) {
        final StringBuilder buf = new StringBuilder(1000);
        buf.append("url:").append(getUrl(keyObj));
        buf.append('\t');

     *
     * @return a string containing the execution result and any error messages
     */
    @Override
    public String execute() {
        final StringBuilder resultBuf = new StringBuilder();

        if (sessionId == null) { // create session id
            sessionId = RandomStringUtils.randomAlphabetic(15);
        }

     */
    protected static String unescapeJava(String str) {
        if (str == null) {
            return null;
        }
        int sz = str.length();
        StringBuilder out = new StringBuilder(sz);
        StringBuilder unicode = new StringBuilder(UNICODE_LEN);
        boolean hadSlash = false;
        boolean inUnicode = false;
        for (int i = 0; i < sz; i++) {
            char ch = str.charAt(i);

     */
    protected static String unescapeJava(String str) {
        if (str == null) {
            return null;
        }
        int sz = str.length();
        StringBuilder out = new StringBuilder(sz);
        StringBuilder unicode = new StringBuilder(UNICODE_LEN);
        boolean hadSlash = false;
        boolean inUnicode = false;
        for (int i = 0; i < sz; i++) {
            char ch = str.charAt(i);

    }

    @Override
    public LocalRepository getRepository() {
        return repository;
    }

    @Override
    public String getPathForLocalArtifact(Artifact artifact) {
        StringBuilder path = new StringBuilder(128);

        path.append(artifact.getGroupId()).append('/');

        path.append(artifact.getExtension()).append("s/");

    }

    @Override
    public LocalRepository getRepository() {
        return repository;
    }

    @Override
    public String getPathForLocalArtifact(Artifact artifact) {
        StringBuilder path = new StringBuilder(128);

        path.append(artifact.getGroupId()).append('/');

        path.append(artifact.getExtension()).append("s/");

    }

    public List<ProjectBuildingResult> getResults() {
        return results;
    }

    private static String createMessage(String message, String projectId, File pomFile) {
        StringBuilder buffer = new StringBuilder(256);
        buffer.append(message);
        buffer.append(" for project ").append(projectId);
        if (pomFile != null) {
            buffer.append(" at ").append(pomFile.getAbsolutePath());
        }

                        logger.warn("Failed to write {} to response.", id, e);
                    }
                });
    }

    private static StringBuilder appendJson(final String field, final Object value, final StringBuilder buf) {
        buf.append('"').append(StringEscapeUtils.escapeJson(field)).append('"').append(':');
        if (value == null) {
            buf.append("null");