private function headers(ResponseInterface $response): void
        {
            if (!headers_sent()) {
                
                foreach ($response->getHeaders() as $name => $values) {
                    $cookie = stripos($name, 'Set-Cookie') === 0 ? false : true;
                    foreach ($values as $value) {
                        header(sprintf('%s: %s', $name, $value), $cookie);
                        $cookie = false;
                    
                    }
                }

                header(sprintf(
                    'HTTP/%s %s %s',
                    $response->getProtocolVersion(),
                    $response->getStatusCode(),
                    $response->getReasonPhrase()
                ), true, $response->getStatusCode());

            }
        }