Apply promotion code to the shopping cart.

The following example shows how to apply promotion code to the shopping cart.

POST /wcs/resources/store/10101/cart/@self/assigned_promotion_code HTTP/1.1
Host: testserver.mycompany.com
Content-Type: application/json

{
promoCode:"12345"
}

HTTP/1.1 201 Created
Content-Type: application/json

{
	"orderId": "11001",
	"promoCode": "12345"
}