protected function processPublish(Session $session, PublishMessage $msg)
{
if ($msg->getPublicationId() === null) {
$msg->setPublicationId(Utils::getUniqueId());
}
/** @var SubscriptionGroup $subscriptionGroup */
foreach ($this->subscriptionGroups as $subscriptionGroup) {
$subscriptionGroup->processPublish($session, $msg);
}
if ($msg->acknowledge()) {
$session->sendMessage(new PublishedMessage($msg->getRequestId(), $msg->getPublicationId()));
}
}