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 {
    A @join__graph(name: "a", url: "http://example.com/a")
    B @join__graph(name: "b", url: "http://example.com/b")
}

type User {
    age: Int @join__field(graph: B)
    id: ID! @join__field(graph: A)
    name: String! @join__field(graph: B)
    score: Float @join__field(graph: A)
}

type Query {
    user: User @join__field(graph: A)
}