#8 Added marker to indicate read status in talk chats

lib/api/marianumcloud/talk/leaveRoom/leaveRoom.dart

@@ -3,13 +3,14 @@ import 'package:http/http.dart' as http;
 import 'package:http/http.dart';
 
 import '../talkApi.dart';
-class LeaveRoom extends TalkApi<void> {
+class LeaveRoom extends TalkApi {
   String chatToken;
 
   LeaveRoom(this.chatToken) : super("v4/room/$chatToken/participants/self", null);
 
   @override
   assemble(String raw) {
+    return null;
   }
 
   @override