public function iSendARequestWithFormData($method, $url, PyStringNode $body)
    {
        $url = $this->prepareUrl($url);
        $body = $this->replacePlaceHolder(trim($body));

        $fields = array();
        parse_str(implode('&', explode("\n", $body)), $fields);

        if (version_compare(ClientInterface::VERSION, '6.0', '>=')) {
            $this->request = new Request($method, $url, ['Content-Type' => 'application/x-www-form-urlencoded'], http_build_query($fields, null, '&'));
        } else {
            $this->request = $this->getClient()->createRequest($method, $url);
            /** @var \GuzzleHttp\Post\PostBodyInterface $requestBody */
            $requestBody = $this->request->getBody();
            foreach ($fields as $key => $value) {
                $requestBody->setField($key, $value);
            }
        }

        $this->sendRequest();
    }