anchor.diff:      # https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
       timezone: String
     ): String
  -  id: Int!
  +
  +  # A globally unique ID.
  +  id: ID!
  +
  +  # A type-specific ID.
  +  internalID: ID!
     name: String!
     startAt(
       format: String
  
positive.code: 
  type ExternalGallery {
    city: String
    id: Int!
    name: String!
    partner: Partner
    region: String
  
negative.code: type External {
    auctionHouses(size: Int, term: String): [ExternalAuctionHouse!]!
    fairs(size: Int, term: String): [ExternalFair!]!
    galleries(
      # Limit results to only galleries on Artsy
      artsyOnly: Boolean = true
      size: Int
      term: String
    ): [ExternalGallery!]!
  }
  
  type ExternalAuctionHouse {
    city: String
    country: String
  
    # A globally unique ID.
    id: ID!
  
    # A type-specific ID.
    internalID: ID!
    name: String!
  }
  
  