generate method
Implementation
Future<String> generate() async {
try {
Response response = await fetch().post(API.QRCODE, data: {
"external_id": "${external_id}",
"type": "${type}",
"callback_url": "${callback}",
"amount": nominal
});
return jsonEncode(response.data);
} on DioError catch (e) {
print(e);
return e.toString();
}
}