fessConfigField.setAccessible(true);
        fessConfigField.set(action, ComponentUtil.getFessConfig());

        // Call registerExtraFields via reflection
        final java.lang.reflect.Method method = AdminSearchlistAction.class.getDeclaredMethod("registerExtraFields", RenderData.class);
        method.setAccessible(true);

        final RenderData renderData = new RenderData();

    }

    private HtmlResponse asEditHtml() {
        return asHtml(path_AdminSearchlist_AdminSearchlistEditJsp).renderWith(data -> {
            registerExtraFields(data);
        });
    }

    private void registerExtraFields(final RenderData data) {
        final Set<String> arrayFieldSet = fessConfig.getIndexAdminArrayFieldSet();