directive @core(feature: String!) repeatable on SCHEMA

directive @join__owner(graph: join__Graph!) on OBJECT

directive @join__type(
    graph: join__Graph!
    key: String!
    resolvable: Boolean = true
) repeatable on OBJECT | INTERFACE

directive @join__field(
    graph: join__Graph
    requires: String
    provides: String
) on FIELD_DEFINITION

directive @join__graph(name: String!, url: String!) on ENUM_VALUE

enum join__Graph {
    CARS @join__graph(name: "cars", url: "http://example.com/cars")
    INVENTORY @join__graph(name: "inventory", url: "http://example.com/inventory")
}

type Car
    @join__type(graph: CARS, key: "id")
    @join__type(graph: INVENTORY, key: "id")
{
    id: String! @authenticated
    km: Int! @join__field(graph: CARS)
    spareParts: [String!] @join__field(graph: INVENTORY) @authenticated
    year: Int! @join__field(graph: CARS)
}

type Query {
    cars: [Car!]! @join__field(graph: CARS) @authenticated
}