/**
  * @param SubscriptionSelectCommand $message
  *
  * @throws \Baboon\SubscriptionBundle\Exception\PackageNotFoundException
  */
 public function selectSubscription(SubscriptionSelectCommand $message)
 {
     if (null === ($package = $this->packageManager->findPackageByAlias($message->package))) {
         throw new PackageNotFoundException($message->package);
     }
     $subscription = $this->subscriptionProvider->getSubscription();
     if (null === $subscription) {
         $subscription = $this->subscriptionManager->createSubscription();
     }
     $subscription->select($package);
     $this->subscriptionManager->updateSubscription($subscription);
     $this->eventRecorder->record(new SubscriptionSelectedEvent($subscription));
 }