feat(Order): add support for CustomLineItemReturnItem

Author: jenschude

src/Core/Model/Order/ReturnItem.php

@@ -12,6 +12,7 @@
 /**
  * @package Commercetools\Core\Model\Order
  * @link https://docs.commercetools.com/http-api-projects-orders.html#returnitem
+ * @ramlTestIgnoreFields('lineItemId', 'customLineItemId')
  * @method string getId()
  * @method ReturnItem setId(string $id = null)
  * @method int getQuantity()
@@ -28,15 +29,24 @@
  * @method ReturnItem setLastModifiedAt(DateTime $lastModifiedAt = null)
  * @method DateTimeDecorator getCreatedAt()
  * @method ReturnItem setCreatedAt(DateTime $createdAt = null)
+ * @method string getType()
+ * @method ReturnItem setType(string $type = null)
+ * @method string getCustomLineItemId()
+ * @method ReturnItem setCustomLineItemId(string $customLineItemId = null)
  */
 class ReturnItem extends JsonObject
 {
+    const TYPE_LINE_ITEM = 'LineItemReturnItem';
+    const TYPE_CUSTOM_LINE_ITEM = 'CustomLineItemReturnItem';
+
     public function fieldDefinitions()
     {
         return [
             'id' => [static::TYPE => 'string'],
             'quantity' => [static::TYPE => 'int'],
+            'type' => [static::TYPE => 'string'],
             'lineItemId' => [static::TYPE => 'string'],
+            'customLineItemId' => [static::TYPE => 'string'],
             'comment' => [static::TYPE => 'string'],
             'shipmentState' => [static::TYPE => 'string'],
             'paymentState' => [static::TYPE => 'string'],