CollectionViewError The CollectionViewError class represents general errors within a collection that are not related to specific activities such as Cursor seeking.
 CursorError This error is thrown by a collection Cursor.
 ItemPendingError This error is thrown when retrieving an item from a collection view requires an asynchronous call.
 SortError This error is thrown when a Sort class is not configured properly; for example, if the find criteria are invalid.