public function getUserAgent()
    {
        $product = $this->getProduct();
        $version = $this->getVersion();
        return $version === null ? $product : $product . '/' . $version;
    }
public function getUserAgent()
    {
        $product = $this->getProduct();
        $version = $this->getVersion();
        return $version === null ? $product : $product . '/' . $version;
    }
public function getUserAgent ( ) { $ product = $ this -> getProduct ( ) ; $ version = $ this -> getVersion ( ) ; return $ version === null ? $ product : $ product . '/' . $ version ; }
Get User-agent

@return string
Get User - agent