schema
  @link(url: "https://specs.apollo.dev/link/v1.0")
  @link(url: "https://specs.apollo.dev/join/v0.3", for: EXECUTION) {
  query: Query
}

directive @join__enumValue(graph: join__Graph!) repeatable on ENUM_VALUE

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

directive @join__field(
  graph: join__Graph
  requires: join__FieldSet
  provides: join__FieldSet
  type: String
  external: Boolean
  override: String
  usedOverridden: Boolean
) repeatable on FIELD_DEFINITION | INPUT_FIELD_DEFINITION

directive @join__implements(
  graph: join__Graph!
  interface: String!
) repeatable on OBJECT | INTERFACE

directive @join__type(
  graph: join__Graph!
  key: join__FieldSet
  extension: Boolean! = false
  resolvable: Boolean! = true
  isInterfaceObject: Boolean! = false
) repeatable on OBJECT | INTERFACE | UNION | ENUM | INPUT_OBJECT | SCALAR

directive @join__unionMember(
  graph: join__Graph!
  member: String!
) repeatable on UNION

scalar join__FieldSet

directive @link(
  url: String
  as: String
  for: link__Purpose
  import: [link__Import]
) repeatable on SCHEMA

scalar link__Import

enum link__Purpose {
  """
  `SECURITY` features provide metadata necessary to securely resolve fields.
  """
  SECURITY

  """
  `EXECUTION` features provide metadata necessary for operation execution.
  """
  EXECUTION
}

enum join__Graph {
  CONTENT @join__graph(name: "content", url: "")
}

type Query @join__type(graph: CONTENT) {
  node(id: ID!): INode
}

type MyNode implements INode
  @join__type(graph: CONTENT)
  @join__implements(graph: CONTENT, interface: "INode") {
  id: ID!
  content: Content
}

type TextContent implements ITextContent
  @join__type(graph: CONTENT)
  @join__implements(graph: CONTENT, interface: "ITextContent") {
  id: ID!
  fragments: [TextContentFragment!]!
}

type TextGroupContent implements ITextContent
  @join__type(graph: CONTENT)
  @join__implements(graph: CONTENT, interface: "ITextContent") {
  id: ID!
  fragments: [TextContentFragment!]!
}

type TextContentFragment @join__type(graph: CONTENT) {
  contentNode: MyNode!
}

interface INode @join__type(graph: CONTENT) {
  id: ID!
}

interface ITextContent @join__type(graph: CONTENT) {
  id: ID!
  fragments: [TextContentFragment!]!
}

union Content
  @join__type(graph: CONTENT)
  @join__unionMember(graph: CONTENT, member: "TextContent")
  @join__unionMember(graph: CONTENT, member: "TextGroupContent") =
  | TextContent
  | TextGroupContent
