+ quotation provider

frontend/pshared/lib/models/payment/methods/iban.dart

@@ -2,7 +2,7 @@ import 'package:pshared/models/payment/methods/data.dart';
 import 'package:pshared/models/payment/type.dart';
 
 
-class IbanPaymentMethod extends PaymentMethodData {
+class IbanPaymentMethod implements PaymentMethodData {
   @override
   final PaymentType type = PaymentType.iban;
 
@@ -10,11 +10,14 @@ class IbanPaymentMethod extends PaymentMethodData {
   final String accountHolder;   // Full name of the recipient
   final String? bic;            // Optional: for cross-border transfers
   final String? bankName;       // Optional: for UI clarity
+  @override
+  final Map<String, String>? metadata;
 
-  IbanPaymentMethod({
+  const IbanPaymentMethod({
     required this.iban,
     required this.accountHolder,
     this.bic,
     this.bankName,
+    this.metadata,
   });
 }