for (final int v : fessConfig.getQueryHighlightTerminalCharsAsArray()) {
            highlightTerminalCharSet.add(v);
        }
        try {
            final ServletContext servletContext = ComponentUtil.getComponent(ServletContext.class);
            servletContext.setSessionTrackingModes(
                    fessConfig.getSessionTrackingModesAsSet().stream().map(SessionTrackingMode::valueOf).collect(Collectors.toSet()));