private function assertNot($message, $selectorId, $exceptionMsg)
    {
        $selector = $this->getDrupalSelector($selectorId);
        $selectorObjects = $this->getSession()->getPage()->findAll("css", $selector);
        if (!empty($selectorObjects)) {
            foreach ($selectorObjects as $selectorObject) {
                if (strpos(trim($selectorObject->getText()), $message) !== false) {
                    throw new ExpectationException(sprintf($exceptionMsg, $this->getSession()->getCurrentUrl(), $message), $this->getSession()->getDriver());
                }
            }
        }
    }