public function __construct()
{
parent::__construct('backup', 'course');
$this->addOption('f|filename:', 'path to filename to save the course backup');
$this->addOption('p|path:', 'path to save the course backup');
$this->addOption('F|fullbackup', 'do full backup instead of general');
$this->addOption('template', 'do template backup instead of general');
$this->addArgument('id');
}