protected void createPagingQuery(final SearchForm form) {
        final List<String> pagingQueryList = new ArrayList<>();
        if (form.ex_q != null) {
            stream(form.ex_q).of(stream -> stream.filter(StringUtil::isNotBlank).distinct()
                    .forEach(q -> pagingQueryList.add("ex_q=" + LaFunctions.u(q))));
        }
        if (StringUtil.isNotBlank(form.sort)) {

    @Size(max = 1000)
    public String q;

    @Size(max = 1000)
    public String sort;

    @ValidateTypeFailure
    public Integer num;

    public String[] lang;

    public String[] ex_q;

    @ValidateTypeFailure
    public Integer start;

    @ValidateTypeFailure
    public Integer offset;

    @ValidateTypeFailure
    public Integer pn;

    @Size(max = 1000)

    public Map<String, String[]> as = new HashMap<>();

    public String[] ex_q;

    public String sdh;

    @Override
    public String getQuery() {
        return q;
    }

    @Override
    public String[] getExtraQueries() {
        return stream(ex_q).get(stream -> stream.filter(StringUtil::isNotBlank).distinct().toArray(n -> new String[n]));
    }

    @Override

    <function-class>org.codelibs.fess.taglib.FessFunctions</function-class>
    <function-signature>java.lang.String pagingQuery(java.lang.String)</function-signature>
    <example>
      ${fe:pagingQuery("ex_q=timestamp:")}
    </example>
  </function>

  <function>
    <description>
      Returns query parameters for Facet.
    </description>
    <name>facetQuery</name>

            if (pagingQueryList != null) {
                final String prefix;
                if (query != null) {
                    prefix = "ex_q=" + query.split(":")[0] + "%3A";
                } else {
                    prefix = null;
                }
                return pagingQueryList.stream().filter(s -> prefix == null || !s.startsWith(prefix))

        public String getQuery() {
            return request.getParameter("q");
        }

        @Override
        public String[] getExtraQueries() {
            return getParamValueArray(request, "ex_q");
        }

        @Override
        public Map<String, String[]> getFields() {
            final Map<String, String[]> fields = new HashMap<>();

labels.q=Query
labels.roles=Roles
labels.suggestSearchLog=Suggest Search Log
labels.suggestWord=Suggest Word
labels.targetLabel=Label
labels.term=Term
labels.fields=Fields
labels.ex_q=Extended Query
labels.ldapProviderUrl=LDAP URL
labels.ldapSecurityPrincipal=User DN
labels.ldapAdminSecurityPrincipal=Bind DN
labels.ldapAdminSecurityCredentials=Password
labels.ldapBaseDn=Base DN

labels.q=Запрос
labels.roles=Роли
labels.suggestSearchLog=Журнал предлагаемого поиска
labels.suggestWord=Предлагаемые слова
labels.targetLabel=Название
labels.term=Срок
labels.fields=Поля
labels.ex_q=Расширенный запрос
labels.ldapProviderUrl=LDAP URL
labels.ldapSecurityPrincipal=User DN
labels.ldapAdminSecurityPrincipal=Привязать DN
labels.ldapAdminSecurityCredentials=Password
labels.ldapBaseDn=Базовый DN

labels.q=Anfrage
labels.roles=Rollen
labels.suggestSearchLog=Protokoll mit Suchvorschlägen
labels.suggestWord=Wort vorschlagen
labels.targetLabel=Label
labels.term=Begriff
labels.fields=Felder
labels.ex_q=Erweiterte Query
labels.ldapProviderUrl=LDAP-URL
labels.ldapSecurityPrincipal=Benutzer-DN
labels.ldapAdminSecurityPrincipal=Bind-DN
labels.ldapAdminSecurityCredentials=Passwort
labels.ldapBaseDn=Basis-DN

labels.roles	=	Les rôles
labels.suggestSearchLog	=	Suggérer un journal de recherche
labels.suggestWord	=	Suggérer un mot
labels.targetLabel	=	Étiqueter
labels.term	=	Terme
labels.fields	=	Des champs
labels.ex_q	=	Requête étendue
labels.ldapProviderUrl	=	URL LDAP
labels.ldapSecurityPrincipal	=	DN de l'utilisateur
labels.ldapAdminSecurityPrincipal	=	Bind DN
labels.ldapAdminSecurityCredentials	=	Mot de passe