feat: additional custom discount applied to total price

src/Model/AccommodationBookingApiResponse.php

@@ -73,6 +73,13 @@ final readonly class AccommodationBookingApiResponse
     #[Groups(['api:single'])]
     public ?int $additionalServicesDiscount;
 
+    /** Applies to the total after the three section discounts above, not to the gross total. */
+    #[Groups(['api:single'])]
+    public ?int $totalDiscount;
+
+    #[Groups(['api:single'])]
+    public ?string $totalDiscountLabel;
+
     #[Groups(['api:single'])]
     public ?int $totalPrice;
 
@@ -115,6 +122,8 @@ final readonly class AccommodationBookingApiResponse
         $this->accommodationDiscount = $booking->getAccommodationDiscount();
         $this->boardServiceDiscount = $booking->getBoardServiceDiscount();
         $this->additionalServicesDiscount = $booking->getAdditionalServicesDiscount();
+        $this->totalDiscount = $booking->getTotalDiscount();
+        $this->totalDiscountLabel = $booking->getTotalDiscountLabel();
         $this->totalPrice = $booking->getTotalPrice();
         $this->pricingCurrency = $booking->getPricingCurrency();
         $this->pricingVersion = $booking->getPricingVersion();