query getProduct {
  size
  topProducts {
    name
    inStock
  }
}

type Query {
  topProducts: Product
  name: String
  size: Int
}

type Product {
  inStock: Boolean @join__field(graph: INVENTORY)
  name: String @join__field(graph: PRODUCTS)
  price: Int
  shippingEstimate: Int
  upc: String!
  weight: Int
}

directive @join__field(graph: join__Graph) on FIELD_DEFINITION
enum join__Graph {
  INVENTORY,
  PRODUCTS,
}