* @return true if OSDD link is enabled
     */
    protected boolean isOsddLinkEnabled() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String osddLinkEnabled = fessConfig.getOsddLinkEnabled();
        if (Constants.TRUE.equalsIgnoreCase(osddLinkEnabled)) {
            return true;
        }

        if (!Constants.AUTO.equalsIgnoreCase(osddLinkEnabled)) {
            return false;
        }