anchor.diff:  
     # Home screen content
     homePage: HomePage
  +  job(id: ID!): Job!
  +  jobs: [Job!]!
     marketingCategories: [MarketingCollectionCategory!]!
     marketingCollection(slug: String!): MarketingCollection
     marketingCollections(
  
positive.code:     # The ID of the Credit Card
      id: String!
    ): CreditCard
  
    # A namespace external partners (provided by Galaxy)
    external: External!
  
negative.code:   ): String
  }
  
  type Department {
    id: ID!
    jobs: [Job!]!
    name: String!
  }
  
  type Device {
    # E.g., net.artsy.artsy
    appId: String!
  