anchor.diff:    requestCredentialsForAssetUpload(
       input: RequestCredentialsForAssetUploadInput!
     ): RequestCredentialsForAssetUploadPayload
  +
  +  # Request price estimate of an artwork
  +  requestPriceEstimate(input: RequestPriceEstimateInput!): RequestPriceEstimatePayload
   
     # Save (or remove) an artwork to (from) a users default collection.
     saveArtwork(input: SaveArtworkInput!): SaveArtworkPayload
  
positive.code:   countryCode: String
  }
  
  type ResizedImageUrl {
    factor: Float!
    height: Int
  
negative.code: 
    # Singular estimate field, if specified
    estimateCents: Int
  
    # A formatted description of the lot end date and time
    formattedEndDateTime: String
  
    # A formatted description of when the lot starts or ends or if it has ended
    formattedStartDateTime: String
  