/**
* Write the given message to the response and mark it complete.
*
* If the message is an Http\Response decorator, call and return its
* `end()` method; otherwise, decorate the response and `end()` it.
*
* @param ResponseInterface $response
* @param string $message
* @return Http\Response
*/
private function completeResponse(ResponseInterface $response, $message)
{
if ($response instanceof Http\Response) {
return $response->end($message);
}
$response = new Http\Response($response);
return $response->end($message);
}