<page_callback>CRM_Core_Page_AJAX_RecurringEntity::generatePreview</page_callback>
<access_arguments>access CiviCRM,access CiviEvent</access_arguments>
</item>
+ <item>
+ <path>civicrm/ajax/l10n-js</path>
+ <page_callback>CRM_Core_Resources::outputLocalizationJS</page_callback>
+ </item>
</menu>