public async Task Handle(VotePosted notification, CancellationToken cancellationToken)
{
var answer = await _answersRepository.Get(notification.AnswerId) !;
if (answer is null)
{
throw new NullReferenceException(
$"answer with id {notification.AnswerId} was not found");
}
answer.IncrementVotes();
await _domainEvents
.CollectFrom(answer)
.PublishCollected(cancellationToken);
}