anchor.diff:    # List of all artwork attribution classes
     artworkAttributionClasses: [AttributionClass]
   
  +  # List of all artwork medium types
  +  artworkMediumTypes: [MediumType]
  +
     # A list of Artworks
     artworks(
       after: String
  
positive.code:   # Represents the "**medium type**", such as _Painting_. (This field is also
    # commonly referred to as just "medium", but should not be confused with the
    # artwork attribute called `medium`.)
    category: String
  
    # Returns the display label and detail for artwork certificate of authenticity
    certificateOfAuthenticity: ArtworkInfoRow
  
negative.code: 
    # A count of unread notifications.
    unreadNotificationsCount: Int!
  }
  
  # Collection of fields that describe medium type, such as _Painting_. (This field
  # is also commonly referred to as just "medium", but should not be confused with
  # the artwork attribute called `medium`.)
  type MediumType {
    # A globally unique ID.
    id: ID!
  
    # A type-specific ID likely used as a database ID.
    internalID: ID!
  
    # Long descriptive phrase
    longDescription: String
  
    # Shortest form of medium type display
    name: String
  }
  
  # A message in a conversation.
  