getSenders example

$context = [
            'class' => $envelope->getMessage()::class,
        ];

        $sender = null;

        if ($envelope->all(ReceivedStamp::class)) {
            // it's a received message, do not send it back             $this->logger?->info('Received message {class}', $context);
        } else {
            $shouldDispatchEvent = true;
            $senders = $this->sendersLocator->getSenders($envelope);
            $senders = \is_array($senders) ? $senders : iterator_to_array($senders);
            foreach ($senders as $alias => $sender) {
                if (null !== $this->eventDispatcher && $shouldDispatchEvent) {
                    $event = new SendMessageToTransportsEvent($envelope, $senders);
                    $this->eventDispatcher->dispatch($event);
                    $envelope = $event->getEnvelope();
                    $shouldDispatchEvent = false;
                }

                $this->logger?->info('Sending message {class} with {alias} sender using {sender}', $context + ['alias' => $alias, 'sender' => $sender::class]);
                $envelope = $sender->send($envelope->with(new SentStamp($sender::class, \is_string($alias) ? $alias : null)));
            }

    public function testItReturnsTheSenderBasedOnTheMessageClass()
    {
        $sender = $this->createMock(SenderInterface::class);
        $sendersLocator = $this->createContainer([
            'my_sender' => $sender,
        ]);
        $locator = new SendersLocator([
            DummyMessage::class => ['my_sender'],
        ], $sendersLocator);

        $this->assertSame(['my_sender' => $sender], iterator_to_array($locator->getSenders(new Envelope(new DummyMessage('a')))));
        $this->assertSame([], iterator_to_array($locator->getSenders(new Envelope(new SecondMessage()))));
    }

    public function testItReturnsTheSenderBasedOnTransportNamesStamp()
    {
        $mySender = $this->createMock(SenderInterface::class);
        $otherSender = $this->createMock(SenderInterface::class);
        $sendersLocator = $this->createContainer([
            'my_sender' => $mySender,
            'other_sender' => $otherSender,
        ]);