protected ICollection <Guid> GetMetadataExtractorIdsForMediaCategories(IEnumerable <string> mediaCategories)
{
IMediaAccessor mediaAccessor = ServiceRegistration.Get <IMediaAccessor>();
ICollection <Guid> result = new HashSet <Guid>();
foreach (string mediaCategory in mediaCategories)
{
CollectionUtils.AddAll(result, mediaAccessor.GetMetadataExtractorsForCategory(mediaCategory));
}
return(result);
}
