anchor.diff:  input ShippingZoneInput {
     name: String
     countries: [String]
  +  default: Boolean
   }
   
   type ShippingZoneUpdate {
  
positive.code:   defaultShippingAddress: AddressInput
  }
  
  type CustomerUpdate {
    errors: [Error]
    user: User
  
negative.code:   categoryUpdate(id: ID!, input: CategoryInput!): CategoryUpdate
    customerCreate(input: UserCreateInput!): CustomerCreate
    customerUpdate(id: ID!, input: CustomerInput!): CustomerUpdate
    customerPasswordReset(input: CustomerPasswordResetInput!): CustomerPasswordReset
    customerRegister(input: CustomerRegisterInput!): CustomerRegister
    staffCreate(input: StaffCreateInput!): StaffCreate
    staffUpdate(id: ID!, input: StaffInput!): StaffUpdate
    staffDelete(id: ID!): StaffDelete
  