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() {

            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;