.forEach(k -> addSystemProperty(cmdList, k.toString(), null, null));
    }

    protected void addFessCustomSystemProperties(final List<String> cmdList, final String regex) {
        if (StringUtil.isNotBlank(regex)) {
            final Pattern pattern = Pattern.compile(regex);
            System.getProperties().keySet().stream().filter(k -> k != null && pattern.matcher(k.toString()).matches())

            final int depth, final String encoding) {
        // add url and filter
        final Set<String> urlSet = new HashSet<>();
        final List<UrlQueue<?>> childList = childUrlList.stream().filter(d -> StringUtil.isNotBlank(d.getUrl())
                && urlSet.add(d.getUrl() + "\n" + d.getMetaData()) && crawlerContext.getUrlFilter().match(d.getUrl())).map(d -> {
                    final UrlQueue<?> uq = crawlerContainer.getComponent("urlQueue");

                stream(roles).of(stream -> stream.forEach(s -> permissionSet.add(systemHelper.getSearchRoleByRole(s))));
                permissions = permissionSet.stream().filter(StringUtil::isNotBlank).distinct().toArray(n -> new String[n]);
            }
            return permissions;
        }

        @Override
        public boolean refresh() {

                        buildNumber = node.getTextContent();
                    }
                }
            }
        }
        if (StringUtil.isNotBlank(timestamp) && StringUtil.isNotBlank(buildNumber)) {
            return timestamp + "-" + buildNumber;
        }
        return null;
    }

    protected String getRepositoryContent(final String url) {

     */
    @Override
    public String getDataAsString() {
        if (data == null) {
            return null;
        }
        try {
            return new String(data, StringUtil.isNotBlank(encoding) ? encoding : Constants.UTF_8);
        } catch (final UnsupportedEncodingException e) {
            return new String(data, Constants.UTF_8_CHARSET);
        }
    }

    @Override

            }
        }

        // user agent
        userAgent = getInitParameter(USER_AGENT_PROPERTY, userAgent, String.class);
        if (StringUtil.isNotBlank(userAgent)) {
            httpClientBuilder.setUserAgent(userAgent);
        }

        final HttpRoutePlanner planner = buildRoutePlanner();
        if (planner != null) {

        "-PflakyTests=${determineFlakyTestStrategy(stage)}",
        extraParameters,
        parallelizationMethod.extraBuildParameters
    ).filter { it.isNotBlank() }.joinToString(separator = " ")

    if (parallelizationMethod is ParallelizationMethod.TeamCityParallelTests) {
        tcParallelTests(parallelizationMethod.numberOfBatches)
    }

    features {

        }

        idx = url.indexOf('?');
        if (idx >= 0) {
            url = url.substring(0, idx);
        }

        if (encoding != null) {
            String enc;
            if (StringUtil.isNotBlank(getFessConfig().getCrawlerDocumentSiteEncoding())
                    && (!getFessConfig().isCrawlerDocumentUseSiteEncodingOnEnglish() || "ISO-8859-1".equalsIgnoreCase(encoding)

                authSchemeProviderBuilder.register(entry.getKey(), entry.getValue());
            }
        }

        // user agent
        if (StringUtil.isNotBlank(userAgent)) {
            httpClientBuilder.setUserAgent(userAgent);
        }

        // Authentication
        final Authentication[] siteCredentialList = {};

        if (crawlingInfoPager.id != null) {
            cb.query().docMeta().setId_Equal(crawlingInfoPager.id);
        }
        // TODO Long, Integer, String supported only.
        if (StringUtil.isNotBlank(crawlingInfoPager.sessionId)) {
            cb.query().setSessionId_Match(crawlingInfoPager.sessionId);
        }
        cb.query().addOrderBy_CreatedTime_Desc();
    }