anchor.diff:  # A list of backup second factors or errors
   union BackupSecondFactorsOrErrorsUnion = BackupSecondFactors | Errors
   
  +type BankAccount {
  +  # Name on the bank account
  +  accountHolderName: String
  +
  +  # Bank name
  +  bankName: String!
  +
  +  # A globally unique ID.
  +  id: ID!
  +
  +  # A type-specific ID likely used as a database ID.
  +  internalID: ID!
  +
  +  # Last four characters of the account identifier
  +  last4: String!
  +}
  +
   type Bidder implements Node {
     createdAt(
       format: String
  
positive.code:   orderHistory: [CommerceOrderEventUnion!]!
    orderUpdateState: String
    paymentMethod: CommercePaymentMethodEnum
    requestedFulfillment: CommerceRequestedFulfillmentUnion
    seller: CommerceOrderPartyUnion!
    sellerDetails: OrderParty
  
negative.code:   # `LOGGED_IN` because we don't know whether or not the authentication is valid
    # (error could be something else).
    authenticationStatus: AuthenticationStatus!
  
    # A user's bank account
    bankAccount(
      # The ID of the bank account
      id: String!
    ): BankAccount
    channel(id: ID!): Channel!
  
    # A list of cities
  