private static Func <IOrderedQueryable <T>, IOrderedQueryable <T> > AppendThenBy <T>(OrderOptions order)
where T : class, new()
=> order.IsDescending
? AppendThenByDescending <T>(order.OrderColumn)
: AppendThenBy <T>(order.OrderColumn);
private static Func <IQueryable <T>, IOrderedQueryable <T> > CreateOrderBy <T>(OrderOptions order)
where T : class, new()
=> order.IsDescending
? CreateOrderByDescending <T>(order.OrderColumn)
: CreateOrderBy <T>(order.OrderColumn);
