anchor.diff:  }
   
   type CheckoutShippingMethodUpdate {
  +  errors: [Error!]
  +  checkout: Checkout
  +}
  +
  +type CheckoutUpdateMeta {
  +  errors: [Error!]
  +  checkout: Checkout
  +}
  +
  +type CheckoutUpdatePrivateMeta {
     errors: [Error!]
     checkout: Checkout
   }
  
positive.code:   checkoutShippingAddressUpdate(checkoutId: ID!, shippingAddress: AddressInput!): CheckoutShippingAddressUpdate
    checkoutShippingMethodUpdate(checkoutId: ID, shippingMethodId: ID!): CheckoutShippingMethodUpdate
    checkoutUpdateVoucher(checkoutId: ID!, voucherCode: String): CheckoutUpdateVoucher
    passwordReset(email: String!): PasswordReset
    setPassword(id: ID!, input: SetPasswordInput!): SetPassword
    customerCreate(input: UserCreateInput!): CustomerCreate
  
negative.code:   checkout: Checkout
  }
  
  type CheckoutClearStoredMeta {
    errors: [Error!]
    checkout: Checkout
  }
  
  type CheckoutClearStoredPrivateMeta {
    errors: [Error!]
    checkout: Checkout
  }
  
  type CheckoutComplete {
    errors: [Error!]
    order: Order
  