ECWID-163221: also adding 'taxClassCode' property to order calculation

Author: carlecwid

src/main/kotlin/com/ecwid/apiclient/v3/dto/cart/request/OrderForCalculate.kt

@@ -104,7 +104,8 @@ data class OrderForCalculate(
 		val taxes: List<OrderItemTax>? = null,
 		val files: List<OrderItemProductFile>? = null,
 		val dimensions: ProductDimensions? = null,
-		val discounts: List<OrderItemDiscounts>? = null
+		val discounts: List<OrderItemDiscounts>? = null,
+		val taxClassCode: String? = null
 	)
 
 	data class OrderItemOption(

src/test/kotlin/com/ecwid/apiclient/v3/entity/CartsTest.kt

@@ -513,7 +513,8 @@ class CartsTest : BaseEntityTest() {
 			),
 			discounts = listOf(
 				generateOrderItemDiscounts()
-			)
+			),
+			taxClassCode = "sample-b1-tax"
 		)
 	}
 

src/test/kotlin/com/ecwid/apiclient/v3/rule/nullablepropertyrules/OrderForCalculateRules.kt

@@ -91,6 +91,7 @@ val orderForCalculateNullablePropertyRules: List<NullablePropertyRule<*, *>> = l
 	IgnoreNullable(OrderForCalculate.OrderItem::taxes),
 	IgnoreNullable(OrderForCalculate.OrderItem::trackQuantity),
 	IgnoreNullable(OrderForCalculate.OrderItem::weight),
+	AllowNullable(OrderForCalculate.OrderItem::taxClassCode),
 	IgnoreNullable(OrderForCalculate.OrderItemDiscountInfo::base),
 	IgnoreNullable(OrderForCalculate.OrderItemDiscountInfo::orderTotal),
 	IgnoreNullable(OrderForCalculate.OrderItemDiscountInfo::type),