Demo schema for deprecated

schema.graphql

type Author {
  firstName: String @deprecated
  id: Int! @deprecated(reason: "Thrown away")
  lastName: String
  posts: [Post!]!
}

type Comment {
  comment: String!
  id: Int!
  postId: Int!
}

type Mutation {
  addComment(comment: String!, postId: Int!): Comment!
  addPost(authorId: Int!, title: String!): Post!
  upvotePost(postId: Int!): Post!
}

type Post {
  author: Author!
  comments: [Comment]!
  id: Int!
  title: String!
  votes: Int
}

type Query {
  author(id: Int!): Author!
  comment(id: Int!): Comment!
  post(id: Int!): Post!
}

type Subscription {
  postAdded: Post!
}