src/Application/HttpApplication.php
public function handle(ServerRequestInterface $request): ResponseInterface
    {
        $response = $this->getMiddlewarePipe()->handle($request);

        return $response;
    }
public function handle(ServerRequestInterface $request): ResponseInterface
    {
        $response = $this->getMiddlewarePipe()->handle($request);

        return $response;
    }
Runs application listeners and handles request flow process.

@param ServerRequestInterface $request
@return ResponseInterface