public void ChooseGenres(IList <string> genreIds)
{
if (genreIds.Count != GenresAmount)
{
throw new InvalidOperationException($"You have to pick exactly {GenresAmount} genres");
}
var e = new GenresChosen(Id, genreIds);
Publish(e);
}
private void When(GenresChosen e)
{
_genreIds = e.GenreIds.ToList();
}
