schema
  @core(feature: "https://specs.apollo.dev/core/v0.1")
  @core(feature: "https://specs.apollo.dev/join/v0.1") 
{
  query: Query
  mutation: Mutation
}

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

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

directive @join__type(
  graph: join__Graph!
  key: join__FieldSet
) repeatable on OBJECT | INTERFACE

directive @join__owner(graph: join__Graph!) on OBJECT | INTERFACE

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

scalar join__FieldSet

enum join__Graph {
  SUBGRAPH_1 @join__graph(name: "subgraph_1", url: "http://127.0.0.1:10141/")
}

type Query {
  unused: Int
}

type Mutation {
  upload(data: String): Boolean
}