+source +destination in payments

frontend/pshared/lib/data/dto/payment/payment.dart

@@ -2,15 +2,16 @@ import 'package:json_annotation/json_annotation.dart';
 
 import 'package:pshared/data/dto/payment/operation.dart';
 import 'package:pshared/data/dto/payment/payment_quote.dart';
+import 'package:pshared/data/dto/payment/response_endpoint.dart';
 
 part 'payment.g.dart';
 
-
 @JsonSerializable()
 class PaymentDTO {
   final String? paymentRef;
-  final String? idempotencyKey;
   final String? state;
+  final PaymentResponseEndpointDTO? source;
+  final PaymentResponseEndpointDTO? destination;
   final String? failureCode;
   final String? failureReason;
   final List<PaymentOperationDTO> operations;
@@ -20,8 +21,9 @@ class PaymentDTO {
 
   const PaymentDTO({
     this.paymentRef,
-    this.idempotencyKey,
     this.state,
+    this.source,
+    this.destination,
     this.failureCode,
     this.failureReason,
     this.operations = const <PaymentOperationDTO>[],

frontend/pshared/lib/data/dto/payment/response_endpoint.dart

@@ -0,0 +1,22 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'response_endpoint.g.dart';
+
+@JsonSerializable()
+class PaymentResponseEndpointDTO {
+  final String? type;
+  final Map<String, dynamic>? data;
+  final String? paymentMethodRef;
+  final String? payeeRef;
+
+  const PaymentResponseEndpointDTO({
+    this.type,
+    this.data,
+    this.paymentMethodRef,
+    this.payeeRef,
+  });
+
+  factory PaymentResponseEndpointDTO.fromJson(Map<String, dynamic> json) =>
+      _$PaymentResponseEndpointDTOFromJson(json);
+  Map<String, dynamic> toJson() => _$PaymentResponseEndpointDTOToJson(this);
+}