public IQueryable <Guid> GetScanIDs(Guid documentID)
{
ISingleResult <pGetScansFromDocumentResult> result = _context.GetScansFromDocument(documentID);
return(result.Select(s => s.scanID).AsQueryable());
//IQueryable<Scan> scans = _context.Scans.Where(s => s.DocumentID == documentID);
//return scans.Select(s=>s.ScanID);
}