/**
  * Parse item data for list entries
  * 
  * @param array &$a_item
  */
 public static function addAdditionalSubItemInformation(array &$a_item)
 {
     global $ilUser;
     $item = self::getItem($a_item['ref_id']);
     $a_item['obj_id'] = $a_item['obj_id'] > 0 ? $a_item['obj_id'] : ilObject::_lookupObjId($a_item['ref_id']);
     $a_item['type'] = $a_item['type'] != '' ? $a_item['type'] : ilObject::_lookupType($a_item['obj_id']);
     $a_item['timing_type'] = $item['timing_type'];
     if ($item['changeable'] && $item['timing_type'] == self::TIMINGS_PRESETTING) {
         include_once 'Modules/Course/classes/Timings/class.ilTimingPlaned.php';
         $user_data = ilTimingPlaned::_getPlanedTimings($ilUser->getId(), $a_item['ref_id']);
         if ($user_data['planed_start']) {
             $a_item['start'] = $user_data['planed_start'];
             $a_item['end'] = $user_data['planed_end'];
             $a_item['activation_info'] = 'crs_timings_planed_info';
         } else {
             $a_item['start'] = $item['suggestion_start'];
             $a_item['end'] = $item['suggestion_end'];
             $a_item['activation_info'] = 'crs_timings_suggested_info';
         }
     } elseif ($item['timing_type'] == self::TIMINGS_PRESETTING) {
         $a_item['start'] = $item['suggestion_start'];
         $a_item['end'] = $item['suggestion_end'];
         $a_item['activation_info'] = 'crs_timings_suggested_info';
     } elseif ($item['timing_type'] == self::TIMINGS_ACTIVATION) {
         $a_item['start'] = $item['timing_start'];
         $a_item['end'] = $item['timing_end'];
         $a_item['activation_info'] = 'obj_activation_list_gui';
     } else {
         $a_item['start'] = 'abc';
     }
     // #7359 - session sorting should always base on appointment date
     if ($a_item['type'] == 'sess') {
         include_once './Modules/Session/classes/class.ilSessionAppointment.php';
         $info = ilSessionAppointment::_lookupAppointment($a_item['obj_id']);
         // #11987
         $a_item['masked_start'] = $a_item['start'];
         $a_item['masked_end'] = $a_item['end'];
         $a_item['start'] = $info['start'];
         $a_item['end'] = $info['end'];
     }
 }