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();
        }