return getComponent(SUGGEST_HELPER);
    }

    /**
     * Gets the role query helper component.
     * @return The role query helper.
     */
    public static RoleQueryHelper getRoleQueryHelper() {
        return getComponent(ROLE_QUERY_HELPER);
    }

    /**
     * Gets the LDAP manager component.
     * @return The LDAP manager.
     */
    public static LdapManager getLdapManager() {

        final String[] baseTags = tags != null ? tags : fessConfig.getSuggestPopularWordTagsAsArray();
        final String[] baseRoles = roles != null ? roles
                : ComponentUtil.getRoleQueryHelper()
                        .build(searchRequestType)
                        .stream()
                        .filter(StringUtil::isNotBlank)
                        .toArray(n -> new String[n]);

                    .collect(Collectors.toList());
        }

        final List<Map<String, String>> itemList = new ArrayList<>();
        final Set<String> roleSet = ComponentUtil.getRoleQueryHelper().build(searchRequestType);
        if (roleSet.isEmpty()) {
            for (final LabelTypeItem item : labelList) {
                if (item.getPermissions().length == 0) {

            final BoolQueryBuilder boolQuery =
                    QueryBuilders.boolQuery().must(QueryBuilders.termQuery(fessConfig.getIndexFieldDocId(), docId));
            final Set<String> roleSet = ComponentUtil.getRoleQueryHelper().build(SearchRequestType.JSON); // TODO SearchRequestType?
            final QueryHelper queryHelper = ComponentUtil.getQueryHelper();
            if (!roleSet.isEmpty()) {

            writeJsonResponse(HttpServletResponse.SC_BAD_REQUEST, escapeJsonKeyValue(MESSAGE_FIELD, "Referer is invalid."));
            return;
        }

        final RoleQueryHelper roleQueryHelper = ComponentUtil.getRoleQueryHelper();
        final SearchHelper searchHelper = ComponentUtil.getSearchHelper();

        final StringBuilder buf = new StringBuilder(255);
        try {

     * @return The resolved search log context.
     */
    protected SearchLogContext createSearchLogContext(final SearchRequestParams params, final FessConfig fessConfig) {
        final String[] roles = ComponentUtil.getRoleQueryHelper().build(params.getType()).stream().toArray(n -> new String[n]);
        final String userCode = fessConfig.isUserInfo() ? ComponentUtil.getUserInfoHelper().getUserCode() : null;

     */
    protected void buildRoleQuery(final QueryContext queryContext, final SearchRequestType searchRequestType) {
        if (queryContext.roleQueryEnabled()) {
            final Set<String> roleSet = ComponentUtil.getRoleQueryHelper().build(searchRequestType);
            if (!roleSet.isEmpty()) {
                queryContext.addQuery(boolQuery -> buildRoleQuery(roleSet, boolQuery));
            }
        }
    }

    /**