*/
    @Size(max = 10)
    public String loadBulkData;

    /**
     * The flag to rebuild fess_config indices.
     */
    @Size(max = 10)
    public String rebuildConfigIndex = Constants.ON;

    /**
     * The flag to rebuild fess_user indices.
     */
    @Size(max = 10)
    public String rebuildUserIndex;

    /**
     * The flag to rebuild fess_log indices.
     */

        verifyToken(this::asIndexHtml);

        final boolean loadBulkData = isCheckboxEnabled(form.loadBulkData);
        final Set<String> targetPrefixes = new HashSet<>();
        if (isCheckboxEnabled(form.rebuildConfigIndex)) {
            targetPrefixes.add("fess_config");
        }
        if (isCheckboxEnabled(form.rebuildUserIndex)) {
            targetPrefixes.add("fess_user");
        }