public static IEnumerable<T> FilterCultureSubQuery<T>(this Table<T> t)
    where T : class
    {
      return t;
    }

var test = from p in t.Products
             select new
             {
               Allo = p,
               Allo2 = (from pl in t.ProductLocales.FilterCultureSubQuery()
                        select pl)
             };

public static IQueryable<T> FilterCultureSubQuery<T>(this Table<T> t)
    where T : class
    {
      return t;
    }

public static IQueryable<T> FilterCultureSubQuery<T>(this Table<T> t)
    where T : class
    {
      return t;
    }

var test = from pl in t.ProductLocales.FilterCultureSubQuery()  select pl;

var test = from pl in t.ProductLocales.FilterCultureSubQuery()  select pl;

var test = from p in t.Products
           select new
           {
             Allo = p,
             Allo2 = (from pl in t.ProductLocales.FilterCultureSubQuery()
                      select pl)
           };

var test = (from p in t.Products
               select new
               {
                 Allo = p,
                 Allo2 = (from pl in t.ProductLocales.FilterCultureSubQuery()
                          select pl)
               }).ArrangeExpression();