public static final String LABELS_default_sort_value = "{labels.default_sort_value}";

    /** The key of the message: Virtual Host */
    public static final String LABELS_virtual_host_value = "{labels.virtual_host_value}";

    /** The key of the message: Append Search Parameters */
    public static final String LABELS_append_query_param_enabled = "{labels.append_query_param_enabled}";

        fessConfig.setAppValue(form.appValue);
        fessConfig.setDefaultLabelValue(form.defaultLabelValue);
        fessConfig.setDefaultSortValue(form.defaultSortValue);
        fessConfig.setVirtualHostValue(form.virtualHostValue);
        fessConfig.setAppendQueryParameter(isCheckboxEnabled(form.appendQueryParameter));
        fessConfig.setIgnoreFailureType(form.ignoreFailureType);

    /**
     * Virtual host configuration for multi-tenant setups.
     * Allows different search configurations based on the request host.
     */
    @Size(max = 10000)
    public String virtualHostValue;

    /**
     * Enable or disable appending query parameters to search URLs.
     * When enabled, additional parameters are added to search result URLs.
     */
    @Size(max = 10)