FessConfig fessConfig = new FessConfig.SimpleImpl() {
            @Override
            public String getSystemProperty(final String key, final String defaultValue) {
                return systemPropMap.getOrDefault(key, defaultValue);
            }

            @Override
            public String getSystemProperty(final String key) {
                return systemPropMap.get(key);
            }
        };

        ComponentUtil.getSystemProperties().store();
    }

    default String getSystemProperty(final String key) {
        return ComponentUtil.getSystemProperties().getProperty(key, System.getProperty(Constants.SYSTEM_PROP_PREFIX + key));
    }

    default String getSystemProperty(final String key, final String defaultValue) {

     */
    protected List<String> getDefaultGroupList() {
        String value = ComponentUtil.getFessConfig().getSystemProperty(ENTRAID_DEFAULT_GROUPS);
        if (StringUtil.isBlank(value)) {
            value = ComponentUtil.getFessConfig().getSystemProperty(AAD_DEFAULT_GROUPS);
        }
        if (StringUtil.isBlank(value)) {
            return Collections.emptyList();
        }

     * Gets the default groups as an array.
     *
     * @return the default groups
     */
    protected static String[] getDefaultGroupsAsArray() {
        final String value = ComponentUtil.getFessConfig().getSystemProperty("oic.default.groups");
        if (StringUtil.isBlank(value)) {
            return StringUtil.EMPTY_STRINGS;
        }

        final Map<String, String> systemPropMap = new HashMap<>();
        FessProp.propMap.clear();
        FessConfig fessConfig = new FessConfig.SimpleImpl() {
            @Override
            public String getSystemProperty(final String key, final String defaultValue) {
                return systemPropMap.getOrDefault(key, defaultValue);
            }

            @Override
            public boolean isCrawlerIgnoreRobotsTxt() {

            // Set LLM type name as Access Type for search log
            request.setAttribute(Constants.SEARCH_LOG_ACCESS_TYPE,
                    ComponentUtil.getFessConfig().getSystemProperty("rag.llm.name", "ollama"));

            final Map<String, String[]> fields = parseFieldFilters(request);
            final String[] extraQueries = parseExtraQueries(request);
            final ChatResult result;

     *
     * @return The LLM type string from configuration (e.g., "ollama", "openai", "gemini")
     */
    protected String getLlmType() {
        return ComponentUtil.getFessConfig().getSystemProperty("rag.llm.name", "ollama");
    }

    /**
     * Checks if RAG chat feature is enabled.
     *
     * @return true if RAG chat is enabled, false otherwise
     */

        form.oicRedirectUrl = fessConfig.getSystemProperty("oic.redirect.url", StringUtil.EMPTY);
        form.oicScope = fessConfig.getSystemProperty("oic.scope", StringUtil.EMPTY);
        form.oicBaseUrl = fessConfig.getSystemProperty("oic.base.url", "http://localhost:8080");

        final String key = fessConfig.getSystemProperty("saml.attribute.group.name", "memberOf");
        if (StringUtil.isNotBlank(key)) {
            final List<String> nameList = attributes.get(key);
            if (nameList != null) {
                list.addAll(nameList);
            }
        }
        final String value = fessConfig.getSystemProperty("saml.default.groups");
        if (StringUtil.isNotBlank(value)) {

        final String commandTimeoutStr = fessConfig.getSystemProperty("thumbnail.command.timeout");
        if (commandTimeoutStr != null) {
            commandTimeout = Long.parseLong(commandTimeoutStr);
        }
        final String commandDestroyTimeoutStr = fessConfig.getSystemProperty("thumbnail.command.destroy.timeout");
        if (commandDestroyTimeoutStr != null) {