public async Task DeleteObject(CommentEventObject o)
        {
            var r = o.DbRecord;

            r.Comments = null;
            r.Events   = null;
            eventDbSet.Remove(r);
            await db.SaveChangesAsync();
        }
 public async Task UpdateObject(CommentEventObject o)
 {
     eventDbSet.Update(o.DbRecord);
     await db.SaveChangesAsync();
 }