code: public function handleRequest(Request $request): Promise
      {
          $path = removeDotPathSegments($request->getUri()->getPath());
  
          return new Coroutine(
              ($fileInfo = $this->fetchCachedStat($path, $request))
                  ? $this->respondFromFileInfo($fileInfo, $request)
                  : $this->respondWithLookup($this->root . $path, $path, $request)
          );
      }
docs: Respond to HTTP requests for filesystem resources.
  
  @param Request $request Request to handle.
  
  @return Promise