OrderShopSolver : ajout méthode isEmpty()

Solver/Order/OrderShopSolver.php

         ];
     }
 
+    public function isEmpty(OrderShopInterface $orderShop): bool
+    {
+        return $orderShop->getOrderProducts()->isEmpty();
+    }
+
     public function countQuantities(OrderShopInterface $orderShop): int
     {
         return $this->countQuantitiesByOrderProducts($orderShop->getOrderProducts());