graphql - GraphQL 设计：边可能有自己的子边（连接、关系）吗？

Question

假设用户在电子商店中创建了包含产品的订单，但订购的产品在订单处理过程中有可供选择的选项。所以用户必须选择有一些选项的产品来购买。在 graphql 中有三种类型Product：ProductOption和Order。

type Product implements Node {
   id: ID!
   name: String!
   options: [ProductOptionsConnection!]!
}

type ProductOption implements Node {
   id: ID!
   name: String!
   product: Product!
}

type ProductOptionsConnection {
  edges: [ProductOptionEdge!]!
  totalCount: Int!
  ...
}

type ProductOptionEdge {
  node: ProductOption!
}

type Order implements Node {
   id: ID!
   createdAt: DateTime!
   products: OrderProductsConnection!
}

问题是：订单、产品和选定选项之间关系的最佳方法是什么？

1：

type OrderProductsConnection {
   edges: [OrderProductEdge!]!
   totalCount: Int!
   ...
}

type OrderProductEdge {
   node: Product!
   selectedOptions: [OrderProductOptionsConnection!]!
   addedAt: DateTime
}

type OrderProductOptionsConnection {
   edges: [OrderProductOptionEdge!]!
   totalCount: Int!
   ...
}

type OrderProductOptionEdge {
   node: ProductOption
}

2：

type OrderProductsConnection {
   edges: [OrderProductEdge!]!
   totalCount: Int!
   ...
}

type OrderProductEdge {
  node: OrderProduct!
}

type OrderProduct {  // implements Node??
  product: Product!
  selectedOptions: OrderProductOptionsConnection!
  addedAt: DateTime!
}

type OrderProductOptionsConnection {
  edges: [OrderProductOptionEdge]!
}

type OrderProductOptionEdge {
   node: OrderProductOption!
}

type OrderProductOption { // implements Node??
   option: ProductOption!
   ...
}