private ICollection <Publisher> GetPublishersFromIds(ICollection <int> publisherIds)
{
var pipeline = new Pipeline <Publisher>();
pipeline.Register(_filterFactory.MakePublishersForIdsFilter(publisherIds));
List <Publisher> results = UnitOfWork.Publishers.Find(pipeline).ToList();
if (results.Count != publisherIds.Count)
{
throw new EntityNotFoundException(typeof(Publisher));
}
return(results);
}
