@Override
    public Integer getTimeToLive() {
        return crawlingConfig.getTimeToLive();
    }

    @Override
    public CrawlerClientFactory initializeClientFactory(final Supplier<CrawlerClientFactory> creator) {
        return crawlingConfig.initializeClientFactory(creator);
    }

    @Override
    public Map<String, String> getConfigParameterMap(final ConfigName name) {

    String[] getVirtualHosts();

    String getDocumentBoost();

    String getIndexingTarget(String input);

    String getConfigId();

    Integer getTimeToLive();

    CrawlerClientFactory initializeClientFactory(Supplier<CrawlerClientFactory> creator);

    Map<String, String> getConfigParameterMap(ConfigName name);

    default void initializeDefaultHttpProxy(final Map<String, Object> paramMap) {

        WebConfig webConfig = new WebConfig();
        webConfig.setUserAgent(Constants.CRAWLING_USER_AGENT_PREFIX + "1.0" + Constants.CRAWLING_USER_AGENT_SUFFIX);
        CrawlerClientFactory crawlerClientFactory = webConfig.initializeClientFactory(() -> new CrawlerClientFactory() {
            public void setInitParameterMap(final Map<String, Object> params) {
                initParamMapSet.set(params);
            }
        });