public function sendDelete($handle, $api_key, $security)
    {
        $url = sprintf('%s/file/%s?key=%s',
            FilestackConfig::API_URL, $handle, $api_key);

        if ($security) {
            $url = $security->signUrl($url);
        }

        $response = $this->sendRequest('DELETE', $url);
        $status_code = $response->getStatusCode();

        // handle response
        if ($status_code !== 200) {
            throw new FilestackException($response->getBody(), $status_code);
        }

        return true;
    }