protected function checkBrowserGooglebot()
    {
        if ($this->checkSimpleBrowserUA('Googlebot', $this->_agent, self::BROWSER_GOOGLEBOT, false, true)) {

            if ($this->containString($this->_agent, 'googlebot-mobile')) {
                $this->setMobile(true);
            }

            return true;
        }

        return false;
    }