public function whichBrowser()
    {
        $result = [
            'browser' =>  $this->getBrowserDetector()->getName(),
            'browserVersion' => $this->getBrowserDetector()->getVersion(),
            'os' => $this->getOsDetector()->getName(),
            'osVersion' => $this->getOsDetector()->getVersion()
        ];
        $this->returnJson($result);
    }