} catch (final Exception e) {
            throw new PluginException("Failed to access " + artifactType, e);
        }
    }

    protected String[] getRepositories() {
        return split(ComponentUtil.getFessConfig().getPluginRepositories(), ",")
                .get(stream -> stream.map(String::trim).toArray(n -> new String[n]));
    }

    protected List<Artifact> loadArtifactsFromRepository(final String url) {

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

    default void initializeDefaultHttpProxy(final Map<String, Object> paramMap) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String proxyHost = fessConfig.getHttpProxyHost();
        final String proxyPort = fessConfig.getHttpProxyPort();
        if (StringUtil.isNotBlank(proxyHost) && StringUtil.isNotBlank(proxyPort)) {

        final String url = SystemUtil.getSearchEngineHttpAddress();
        if (url != null) {
            return url;
        }
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return fessConfig.getFesenHttpUrl();
    }

    public static String getAppType() {
        final String appType = System.getenv(FESS_APP_TYPE);
        if (StringUtil.isNotBlank(appType)) {

        if (logger.isDebugEnabled()) {
            logger.debug("Initialize {}", this.getClass().getSimpleName());
        }
        fessConfig = ComponentUtil.getFessConfig();
    }

    @Override
    public FessConfig getFessConfig() {
        return fessConfig;
    }

    @Override
    public Logger getLogger() {
        return logger;
    }

    @Override