…ves as a prototype or template, standing in for all of the products who have an isVariantOf relationship to it. As such, properties (including additional types) can be applied to the ProductGroup to represent characteristics shared by each of the (possibly very many) variants. Pr…

…perties and the list of variants belonging to the group. Adds existing property isVariantOf to type Product to indicate the ProductGroup it is a variant of. Adds property productGroupID as explicit identifier for type ProductGroup . Also adds inverse property inProductGroupWithID…

…perties and the list of variants belonging to the group. Adds existing property isVariantOf to type Product to indicate the ProductGroup it is a variant of. Adds property productGroupID as explicit identifier for type ProductGroup . Also adds inverse property inProductGroupWithID…