public function getConfirmationTradeOfferId(Confirmation $confirmation)
    {
        $url = 'https://steamcommunity.com/mobileconf/details/' . $confirmation->getConfirmationId() . '?' . $this->generateConfirmationQueryParams('details');
        $response = '';
        try {
            $response = $this->mobileAuth->steamCommunity()->cURL($url);
        } catch (\Exception $ex) {

        }
        if (!empty($response)) {
            $json = json_decode($response, true);
            if (isset($json['success']) && $json['success']) {
                $html = $json['html'];
                if (preg_match('/<div class="tradeoffer" id="tradeofferid_(\d+)" >/', $html, $matches)) {
                    return $matches[1];
                }
            }
        }
        return '0';
    }