User defined key attribute on Product Discount

Product Discounts now have a user defined key attribute. You can use the key attribute when querying, updating, or deleting a ProductDiscount.

• [API] Added the key attribute on the ProductDiscount and ProductDiscountDraft representations.
• [API] You can now get, update, and delete a Product Discount by its key.
• [GraphQL API] Added the following types to the GraphQL schema: SetProductDiscountKey.
• [GraphQL API] Changed the ProductDiscount type:
  • Added the key field to the ProductDiscount type.
• [GraphQL API] Changed the ProductDiscountUpdateAction type:
  • Input field setKey was added to ProductDiscountUpdateAction type
• [GraphQL API] Changed the Mutation type:
  • Mutation.updateProductDiscount(id) description is changed
  • Argument key was added to Mutation.updateProductDiscount field
  • Mutation.deleteProductDiscount(id) description is changed
  • Mutation.updateProductDiscount(id) type changed from String! to String
  • Mutation.deleteProductDiscount(id) type changed from String! to String
  • Argument key was added to Mutation.deleteProductDiscount field

Introduced the following changes to the GraphQL schema (in SDL format):

extend type ProductDiscount {
  key: String
}

extend input ProductDiscountUpdateAction {
  setKey: SetProductDiscountKey
}

extend input ProductDiscountDraft {
  key: String
}

input SetProductDiscountKey {
  key: String
}