public static function detect(Browser $browser, UserAgent $userAgent = null)
    {
        self::$browser = $browser;
        if (is_null($userAgent)) {
            $userAgent = self::$browser->getUserAgent();
        }
        self::$userAgentString = $userAgent->getUserAgentString();

        self::$browser->setName(Browser::UNKNOWN);
        self::$browser->setVersion(Browser::VERSION_UNKNOWN);

        self::checkChromeFrame();
        self::checkFacebookWebView();

        foreach (self::$browsersList as $browserName) {
            $funcName = self::FUNC_PREFIX . $browserName;

            if (self::$funcName()) {
                return true;
            }
        }

        return false;
    }