anchor.diff:    applyOncePerOrder: Boolean!
     discountValueType: VoucherDiscountValueType!
     discountValue: Float!
  -  countries: VoucherCountries!
  +  countries: [CountryDisplay]
     minAmountSpent: Money
     products(before: String, after: String, first: Int, last: Int): ProductCountableConnection
     collections(before: String, after: String, first: Int, last: Int): CollectionCountableConnection
  
positive.code:   countries: [CountryDisplay]!
    currencies: [String]!
    defaultCurrency: String!
    availablePaymentGateways: [GatewaysEnum]!
    defaultCountry: CountryDisplay
    description: String
    domain: Domain!
  
negative.code: type VoucherCountableEdge {
    node: Voucher!
    cursor: String!
  }
  
  type VoucherCreate {
  