code: public function generateFeed($intId)
  	{
  		$objFeed = NewsFeedModel::findByPk($intId);
  
  		if ($objFeed === null)
  		{
  			return;
  		}
  
  		$objFeed->feedName = $objFeed->alias ?: 'news' . $objFeed->id;
  
  		// Delete XML file
  		if (Input::get('act') == 'delete')
  		{
  			$this->import(Files::class, 'Files');
  			$this->Files->delete($objFeed->feedName . '.xml');
  		}
  
  		// Update XML file
  		else
  		{
  			$this->generateFiles($objFeed->row());
  			$this->log('Generated news feed "' . $objFeed->feedName . '.xml"', __METHOD__, TL_CRON);
  		}
  	}
docs: Update a particular RSS feed
  
  @param integer $intId