public function setPrefix($prefix)
    {
        switch ($prefix) {
            case 'a': //Access
            case 'c': //Company
            case 'u': //User
            case 'g': //License Groups
            case 'admin':
            case 'status':
            case 'login-logout':
                $this->prefix = '/'.$prefix.'/';
                break;
            case null:
            case '':
            case '/':
                $this->prefix = '';
                break;
            default:
                throw new \Exception(sprintf('Unknown prefix %s', $prefix));
        }
    }