anchor.diff:  
     # Offer price
     offerPrice: MoneyInput
  +
  +  # Offer note
  +  note: String
     clientMutationId: String
   }
   
  
positive.code:     # A tz database time zone, otherwise falls back to `X-TIMEZONE` header
      timezone: String
    ): String
  }
  
  # A connection to a list of items.
  
negative.code: 
    # Offer price
    offerPrice: MoneyInput
  
    # Offer note
    note: String
    clientMutationId: String
  }
  
  