_:n57a542b0c4d847d189a5c79c52330b2bxb0
<http://schema.org/itemListElement>
_:n57a542b0c4d847d189a5c79c52330b2bxb2
<https://knowledgecenter.2checkout.com/API-Integration/JSON-RPC_API_6.0/Reference/04Product-group/Retrieve-a-product-group>