code: public function purgeVersionTable()
  	{
  		$objDatabase = Database::getInstance();
  
  		// Truncate the table
  		$objDatabase->execute("TRUNCATE TABLE tl_version");
  
  		// Add a log entry
  		$this->log('Purged the version table', __METHOD__, TL_CRON);
  	}
docs: Purge the version table