fix: interface guards

packages/ERTP/src/payment.js

@@ -1,22 +1,29 @@
 // @ts-check
 
-import { defineDurableKind, provideKindHandle } from '@agoric/vat-data';
+import { vivifyFarClass } from '@agoric/vat-data';
 
 /** @typedef {import('@agoric/vat-data').Baggage} Baggage */
 
 /**
  * @template {AssetKind} K
  * @param {Baggage} issuerBaggage
  * @param {string} name
- * @param {() => Brand<K>} getBrand must not be called before the issuerKit is
- * created
+ * @param {Brand<K>} brand
+ * @param {InterfaceGuard} PaymentI
  * @returns {() => Payment<K>}
  */
-export const vivifyPaymentKind = (issuerBaggage, name, getBrand) => {
-  const paymentKindHandle = provideKindHandle(issuerBaggage, `${name} payment`);
-  const makePayment = defineDurableKind(paymentKindHandle, () => ({}), {
-    getAllegedBrand: getBrand,
-  });
+export const vivifyPaymentKind = (issuerBaggage, name, brand, PaymentI) => {
+  const makePayment = vivifyFarClass(
+    issuerBaggage,
+    `${name} payment`,
+    PaymentI,
+    () => ({}),
+    {
+      getAllegedBrand() {
+        return brand;
+      },
+    },
+  );
   return makePayment;
 };
 harden(vivifyPaymentKind);