code: public function send(Receiver $receiver, Notification $notification, bool $sandbox): void
      {
          try {
              $this->doSend($receiver, $notification, $sandbox);
          } catch (HttpSenderException $e) {
              $this->httpSender->close();
  
              throw $e;
          }
      }
docs: {@inheritdoc}
  
  @throws HttpSenderException