Fehlerkorrekturen und Erweiterungen

lib/tools/message_header.dart

@@ -0,0 +1,19 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'message_header.g.dart';
+
+@JsonSerializable()
+class MessageHeader {
+  late String messageId;
+
+  late bool requiresAck;
+
+  late Map<String, dynamic> payload;
+
+  MessageHeader();
+
+  factory MessageHeader.fromJson(Map<String, dynamic> json) => _$MessageHeaderFromJson(json);
+
+  Map<String, dynamic> toJson() => _$MessageHeaderToJson(this);
+}
+