/**
* Invocation
*
* @param ServerRequestInterface $request Request
* @param ResponseInterface $response Response
* @param callable $next Next Middleware
* @return ResponseInterface
*/
public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next)
{
$response = $next($request, $response);
$emitter = new SapiEmitter();
$emitter->emit($response);
return $response;
}