anchor.diff:      before: String
       first: Int
       last: Int
  +    type: BankAccountTypes
     ): BankAccountConnection
   
     # Returns a single bidder position
  
positive.code: 
    # Last four characters of the account identifier
    last4: String!
  }
  
  # A connection to a list of items.
  
negative.code: union BankAccountMutationType =
      BankAccountMutationFailure
    | BankAccountMutationSuccess
  
  enum BankAccountTypes {
    SEPA_DEBIT
    US_BANK_ACCOUNT
  }
  
  type Bidder implements Node {
    createdAt(
  