public function start(): ?int
{
    if (request()->isMethod('OPTIONS')) {
        $response = response()->setStatusCode(StatusCode::NO_CONTENT);
    } else {
        $this->loadModules();

        $matchedRoute = $this->resolveRoute();

        $this->loadLanguage();

        $this->logDebugInfo();

        $response = $this->setupViewCache()
            ->getCachedResponse(request()->getUri() ?? '');

        if ($response === null) {
            $response = (new MiddlewareManager($matchedRoute))
                ->applyMiddlewares(request(), response());

            $response = (new RouteDispatcher())
                ->dispatch($matchedRoute, request(), $response);
        }
    }

    $this->sendResponse($response);

    return 0;
}

private function sendResponse(Response $response): void
{
    $this->handleCors($response);
    $response->send();
}

public function serveCachedView(string $uri, Response $response): bool

public function getCachedResponse(string $uri): ?Response