public function remove(CAppUI $AppUI, w2p_Utilities_Date $date)
 {
     $perms = $AppUI->acl();
     $removed = false;
     if ($this->holiday_id && $perms->checkModuleItem('holiday', 'edit', $this->holiday_id)) {
         $holiday_start_date = new w2p_Utilities_Date($this->holiday_start_date);
         $holiday_end_date = new w2p_Utilities_Date($this->holiday_end_date);
         if ($holiday_start_date->equals($date->duplicate())) {
             if ($holiday_end_date->equals($date->duplicate())) {
                 $removed = $this->delete($AppUI);
             } else {
                 $holiday_start_date = new w2p_Utilities_Date($this->holiday_start_date);
                 $this->holiday_start_date = $holiday_start_date->getNextDay()->getDate();
                 $removed = $this->store($AppUI);
             }
         } elseif ($holiday_end_date->equals($date->duplicate())) {
             $holiday_end_date = new w2p_Utilities_Date($this->holiday_end_date);
             $this->holiday_end_date = $holiday_end_date->getPrevDay()->getDate();
             $removed = $this->store($AppUI);
         } elseif ($holiday_start_date->before($date->duplicate()) && $holiday_end_date->after($date->duplicate())) {
             $holiday_end_date = $this->holiday_end_date;
             $this->holiday_end_date = $date->getPrevDay()->getDate();
             $removed = $this->store($AppUI);
             $this->holiday_id = 0;
             // create new record
             $this->holiday_start_date = $date->getNextDay()->getDate();
             $this->holiday_end_date = $holiday_end_date;
             $removed = $this->store($AppUI);
         }
     }
     return $removed;
 }