public function __construct($userAgent = '')
{
if ($userAgent != '') {
$this->setUserAgent($userAgent);
}
$this->addClientParser('FeedReader');
$this->addClientParser('MobileApp');
$this->addClientParser('MediaPlayer');
$this->addClientParser('PIM');
$this->addClientParser('Browser');
$this->addClientParser('Library');
$this->addDeviceParser('HbbTv');
$this->addDeviceParser('Console');
$this->addDeviceParser('CarBrowser');
$this->addDeviceParser('Camera');
$this->addDeviceParser('PortableMediaPlayer');
$this->addDeviceParser('Mobile');
}