fix: Fake User object

lib/src/event.dart

@@ -249,11 +249,11 @@ class Event extends MatrixEvent {
         content: content,
         typeKey: type,
         eventId: eventId,
-      roomId: roomId,
         senderId: senderId,
         originServerTs: originServerTs,
         unsigned: unsigned,
-      room: room);
+        room: room,
+      );
 
   String get messageType => type == EventTypes.Sticker
       ? MessageTypes.Sticker

lib/src/user.dart

@@ -20,33 +20,35 @@ import 'package:matrix/matrix.dart';
 
 /// Represents a Matrix User which may be a participant in a Matrix Room.
 class User extends Event {
-  factory User(String id,
+  factory User(
-      {String? membership,
+    String id, {
+    String? membership,
     String? displayName,
     String? avatarUrl,
-      required Room room}) {
+    required Room room,
+  }) {
     return User.fromState(
       stateKey: id,
+      senderId: id,
+      eventId: 'fake_event',
       content: {
         if (membership != null) 'membership': membership,
         if (displayName != null) 'displayname': displayName,
         if (avatarUrl != null) 'avatar_url': avatarUrl,
       },
       typeKey: EventTypes.RoomMember,
-      roomId: room.id,
       room: room,
       originServerTs: DateTime.now(),
     );
   }
 
   User.fromState({
-    dynamic prevContent,
+    Map<String, dynamic>? prevContent,
     required String stateKey,
-    dynamic content,
+    Map<String, dynamic> content = const {},
     required String typeKey,
-    String eventId = 'fakevent',
+    required String eventId,
-    String? roomId,
+    required String senderId,
-    String senderId = 'fakesender',
     required DateTime originServerTs,
     dynamic unsigned,
     required Room room,