private static HashSet<TaggableSource> GetUniqueTaggables(string id, string type)
{
var list = (List<TaggableSource>)BlobStorage.DeserializeObjectFromUri(BlobStorage.MakeAzureBlobUri(id, type + ".taggables.obj", false));
var uniques = new HashSet<TaggableSource>();
foreach (var taggable in list)
uniques.Add(taggable);
return uniques;
}