*
     * @return OptionalThing containing the query set
     */
    protected OptionalThing<Set<String>> getQuerySet() {
        return LaRequestUtil.getOptionalRequest()
                .map(req -> ((Set<String>) req.getAttribute(Constants.HIGHLIGHT_QUERIES)))
                .filter(s -> s != null);
    }

    /**
     * Gets the content description from highlighted fields.

     * @param status The status code.
     * @param body The body.
     */
    protected void writeJsonResponse(final int status, final String body) {
        final String callback = LaRequestUtil.getOptionalRequest().map(req -> req.getParameter("callback")).orElse(null);
        final boolean isJsonp = ComponentUtil.getFessConfig().isApiJsonpEnabled() && StringUtil.isNotBlank(callback);