public static HEAD_SHOP_ACCOUNT SingleOrDefault(Expression <Func <HEAD_SHOP_ACCOUNT, bool> > expression)
        {
            var repo    = GetRepo();
            var results = repo.Find(expression);
            HEAD_SHOP_ACCOUNT single = null;

            if (results.Count() > 0)
            {
                single = results.ToList()[0];
                single.OnLoaded();
                single.SetIsLoaded(true);
                single.SetIsNew(false);
            }

            return(single);
        }