/**
  * Compact the access list map, if we deem that it's a good time to do so.
  *
  * @return GalleryStatus a status code
  */
 function maybeCompactAccessLists() {
 MyOOS_CoreApi::requireOnce(
     'modules/core/classes/helpers/GalleryPermissionHelper_advanced.class');
 return GalleryPermissionHelper_advanced::maybeCompactAccessLists();
 }