src/Neutrino/HttpClient/Provider/Curl.php
protected function buildHeaders()
    {
        if (!empty($this->header->getHeaders())) {
            return $this->setOption(CURLOPT_HTTPHEADER, $this->header->build());
        }

        return $this;
    }
protected function buildHeaders()
    {
        if (!empty($this->header->getHeaders())) {
            return $this->setOption(CURLOPT_HTTPHEADER, $this->header->build());
        }

        return $this;
    }
Build headers

@return $this