public static function setNoCasServerValidation()
    {
        phpCAS :: traceBegin();
        phpCAS::_validateClientExists();

        phpCAS :: trace('You have configured no validation of the legitimacy of the cas server. This is not recommended for production use.');
        self::$_PHPCAS_CLIENT->setNoCasServerValidation();
        phpCAS :: traceEnd();
    }