anchor.diff:  enum SearchMode {
     AUTOSUGGEST
     SITE
  +}
  +
  +interface SecondFactor {
  +  createdAt: ISO8601DateTime!
  +  disabledAt: ISO8601DateTime
  +  enabled: Boolean!
  +  enabledAt: ISO8601DateTime
  +  internalID: ID!
  +  kind: SecondFactorKind!
  +  updatedAt: ISO8601DateTime!
  +}
  +
  +# Two-Factor Authentication (2FA) Method
  +enum SecondFactorKind {
  +  # App authenticator 2FA method
  +  app
  +
  +  # Backup 2FA method
  +  backup
  +
  +  # SMS 2FA method
  +  sms
   }
   
   # A piece that can be sold
  
positive.code:   internalID: ID!
    name: String
    profileHandle: String
  }
  
  type Bidder implements Node {
  
negative.code:   followsAndSaves: FollowsAndSaves
    hasCreditCards: Boolean
    hasQualifiedCreditCards: Boolean
    hasSecondFactorEnabled: Boolean!
  
    # An invoice
    invoice(
  