public function iSendARequestWithValues($method, $url, TableNode $post)
    {
        $url = $this->prepareUrl($url);
        $fields = array();

        foreach ($post->getRowsHash() as $key => $val) {
            $fields[$key] = $this->replacePlaceHolder($val);
        }

        $bodyOption = array(
          'body' => json_encode($fields),
        );

        if (version_compare(ClientInterface::VERSION, '6.0', '>=')) {
            $this->request = new Request($method, $url, $this->headers, $bodyOption['body']);
        } else {
            $this->request = $this->getClient()->createRequest($method, $url, $bodyOption);
            if (!empty($this->headers)) {
                $this->request->addHeaders($this->headers);
            }
        }

        $this->sendRequest();
    }