code: def process_request(self, request, client_address):
          
          if not self._parallel:
              self._process_request(request, client_address)
              return
          t = self._thread_factory(
              target=self._process_request, args=(request, client_address))
          t.daemon = True
          t.start()
docs: Processes the request by delegating to `_process_request`.