fix: add reply() to the Operation model (#834)

src/models/operation.ts

@@ -1,6 +1,7 @@
 import type { BaseModel } from './base';
 import type { ChannelsInterface } from './channels';
 import type { MessagesInterface } from './messages';
+import type { OperationReplyInterface } from './operation-reply';
 import type { OperationTraitsInterface } from './operation-traits';
 import type { OperationTraitInterface } from './operation-trait';
 import type { ServersInterface } from './servers';
@@ -14,5 +15,6 @@ export interface OperationInterface extends BaseModel, OperationTraitInterface {
   servers(): ServersInterface;
   channels(): ChannelsInterface;
   messages(): MessagesInterface;
+  reply(): OperationReplyInterface | undefined;
   traits(): OperationTraitsInterface;
 }

src/models/v2/operation.ts

@@ -12,6 +12,7 @@ import type { ChannelsInterface } from '../channels';
 import type { ChannelInterface } from '../channel';
 import type { MessagesInterface } from '../messages';
 import type { OperationInterface, OperationAction } from '../operation';
+import type { OperationReplyInterface } from '../operation-reply';
 import type { OperationTraitsInterface } from '../operation-traits';
 import type { ServersInterface } from '../servers';
 import type { ServerInterface } from '../server';
@@ -76,6 +77,10 @@ export class Operation extends OperationTrait<v2.OperationObject> implements Ope
     );
   }
 
+  reply(): OperationReplyInterface | undefined {
+    return;
+  }
+
   traits(): OperationTraitsInterface {
     return new OperationTraits(
       (this._json.traits || []).map((trait: any, index: number) => {

test/models/v2/operation.spec.ts

@@ -179,6 +179,14 @@ describe('Operation model', function() {
     });
   });
 
+  describe('.reply()', function() {
+    it('should return always undefined as it is not a feature part of v2', function() {
+      const doc = { reply: {} };
+      const d = new Operation(doc);
+      expect(d.reply()).toBeUndefined();
+    });
+  });
+
   describe('.traits()', function() {
     it('should return collection of traits', function() {
       const doc = { traits: [{ operationId: '...' }] };