Print raw Dialogflow query result fulfillment message - flutter

Question

I have the following DialogFlow default and Facebook responses for an intent.
I have a simple Flutter app that calls detectIntent on a DialogflowAPI object that returns a response with query result. I want to print the raw fulfilment messages to console.
...
var response = await df.detectIntent(request, sessionPath);
List<GoogleCloudDialogflowV2IntentMessage> payloads = response.queryResult.fulfillmentMessages;
debugPrint("Got response length: ${payloads.length}");
payloads.forEach((element) => debugPrint(element.payload.toString()));
I get the below console output:
flutter: Got response length: 3
flutter: {text: this is some default text!, replies: [default option 1, default option 2]}
flutter: null
flutter: {replies: [default option 1, default option 2], text: this is some default text!}
There are 3 responses, of which 2 are printed correctly. It does not print the quick replies part of the facebook response.

Answer 1

Each GoogleCloudDialogflowV2IntentMessage has a payload member, which is a json-like Map<String, Object?>. You can print this out:
payloads.forEach((element) => debugPrint(element.payload.toString()));
Alternatively
There is also a toJson() method, which might give you more complete information. You can try printing that as well:
payloads.forEach((element) => debugPrint(jsonEncode(element.toJson())));
Note: you'll need to include import 'dart:convert';.