Synchronization::getEventConnection

private function getEventConnection(Event $event, ?FactoryInterface $factory): ?EventConnection
{
	if (!$factory)
	{
		return null;
	}
	$link = $this->mapperFactory->getEventConnection()->getMap([
		'=EVENT_ID' => $event->getId(),
		'=CONNECTION_ID' => $factory->getConnection()->getId(),
	])->fetch();

	return $link;
}