anchor.diff:  
     # 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.
  
positive.code:   # canvas_. (This should not be confused with the artwork attribute called
    # `category`, which is commonly referred to as "medium" or "medium type")
    medium: String
    meta: ArtworkMeta
  
    # The unit of length of the artwork, expressed in `in` or `cm`
  
negative.code:   # List of all artwork attribution classes
    artworkAttributionClasses: [AttributionClass]
  
    # List of all artwork medium types
    artworkMediumTypes: [MediumType]
  
    # A list of Artworks
    artworks(
      after: String
  