protected function statusText($status)
    {
        switch ($status) {
            case EnvironmentCheck::ERROR:
                return 'ERROR';
                break;
            case EnvironmentCheck::WARNING:
                return 'WARNING';
                break;
            case EnvironmentCheck::OK:
                return 'OK';
                break;
            case 0:
                return 'NO CHECKS';
                break;
            default:
                throw new InvalidArgumentException("Bad environment check status '$status'");
                break;
        }
    }