code: public function generateFeeds()
  	{
  		$this->import(Automator::class, 'Automator');
  		$this->Automator->purgeXmlFiles();
  
  		$objCalendar = CalendarFeedModel::findAll();
  
  		if ($objCalendar !== null)
  		{
  			while ($objCalendar->next())
  			{
  				$objCalendar->feedName = $objCalendar->alias ?: 'calendar' . $objCalendar->id;
  				$this->generateFiles($objCalendar->row());
  				$this->log('Generated calendar feed "' . $objCalendar->feedName . '.xml"', __METHOD__, TL_CRON);
  			}
  		}
  	}
docs: Delete old files and generate all feeds