</example>
  </function>

  <function>
    <description>
      Returns a hidden form for Facet.
    </description>
    <name>facetForm</name>
    <function-class>org.codelibs.fess.taglib.FessFunctions</function-class>
    <function-signature>java.lang.String facetForm()</function-signature>
    <example>
      ${fe:facetForm()}
    </example>
  </function>

  <function>
    <description>

    /**
     * Generates hidden HTML form fields for facet filtering.
     *
     * @return HTML string containing hidden input fields for facet parameters
     */
    public static String facetForm() {
        return createForm(Constants.FACET_FORM, FACET_PREFIX);
    }

    /**
     * Generates hidden HTML form fields for geographic filtering.
     *

    /** View parameter for geo query information. */
    public static final String GEO_QUERY = "fess.GeoQuery";

    /** View parameter for facet form data. */
    public static final String FACET_FORM = "fess.FacetForm";

    /** View parameter for geo form data. */
    public static final String GEO_FORM = "fess.GeoForm";

    /** View parameter for label value mapping. */

     * by calling buildInitParamMap for both parameter types.
     */
    protected void buildInitParams() {
        buildInitParamMap(viewHelper.getInitFacetParamMap(), Constants.FACET_QUERY, Constants.FACET_FORM);
        buildInitParamMap(viewHelper.getInitGeoParamMap(), Constants.GEO_QUERY, Constants.GEO_FORM);
    }

    /**
     * Builds parameter maps for search initialization, creating both query strings