First attempt at code formatting in my blog

return from number in Enumerable.Range( 
  1, products.Max( p => p.UnitsInStock ) ?? 0 )
     select new Walrus
        {
          UnitsInStock = number,
          ProductNames = ( 
            from product in products
            where product.UnitsInStock == number
            select product.ProductName )
        } as IWalrus;