anchor.diff:      last: Int
     ): ArtworkConnection
     associatedSale: Sale
  +  bidder: Bidder
   
     # A bid increment policy that explains minimum bids in ranges.
     bidIncrements: [BidIncrement]
  
positive.code:   updateViewingRoom(input: UpdateViewingRoomInput!): UpdateViewingRoomPayload
    updateViewingRoomArtworks(input: UpdateViewingRoomArtworksInput!): UpdateViewingRoomArtworksPayload
    updateViewingRoomSubsections(input: UpdateViewingRoomSubsectionsInput!): UpdateViewingRoomSubsectionsPayload
  }
  
  type MyCollectionArtworkMutationDeleteSuccess {
  
negative.code:   # Can bids be placed on the artwork?
    isBiddable: Boolean
    isBidOn: Boolean
  
    # Is the user the highest bidder on the sale artwork. (Currently only being used via me.myBids.)
    isHighestBidder: Boolean
  
    # Is this sale artwork being watched by a user. (Currently only used on me.myBids and me.watchedLotsConnection.)
    isWatching: Boolean
    isWithReserve: Boolean
    lot: CausalityLotState
    lotLabel: String
    lowEstimate: SaleArtworkLowEstimate
    minimumNextBid: SaleArtworkMinimumNextBid
  