fixed issue with copyWith (#35) (#36)

Author: jkronlachner

example/main.dart

@@ -3,7 +3,8 @@ import 'package:flutter_chat_types/flutter_chat_types.dart'
 
 void main() {
   const user = User(id: 'authorId');
-  const message = TextMessage(author: user, id: 'id', text: 'text');
+  const message =
+      TextMessage(author: user, id: 'id', text: 'text', roomId: '42');
   // ignore: avoid_print
   print(message.toJson());
   final json = {
@@ -13,4 +14,6 @@ void main() {
   };
   // ignore: avoid_print
   print(TextMessage.fromJson(json).toJson());
+  // ignore: avoid_print
+  print(message.copyWith(text: 'new text').toJson());
 }

lib/src/messages/audio_message.dart

@@ -185,7 +185,7 @@ class _AudioMessage extends AudioMessage {
     String? name,
     dynamic remoteId = _Unset,
     dynamic repliedMessage = _Unset,
-    dynamic roomId,
+    dynamic roomId = _Unset,
     dynamic showStatus = _Unset,
     num? size,
     dynamic status = _Unset,

lib/src/messages/custom_message.dart

@@ -130,7 +130,7 @@ class _CustomMessage extends CustomMessage {
     dynamic metadata = _Unset,
     dynamic remoteId = _Unset,
     dynamic repliedMessage = _Unset,
-    dynamic roomId,
+    dynamic roomId = _Unset,
     dynamic showStatus = _Unset,
     dynamic status = _Unset,
     dynamic updatedAt = _Unset,

lib/src/messages/file_message.dart

@@ -178,7 +178,7 @@ class _FileMessage extends FileMessage {
     String? name,
     dynamic remoteId = _Unset,
     dynamic repliedMessage = _Unset,
-    dynamic roomId,
+    dynamic roomId = _Unset,
     dynamic showStatus = _Unset,
     num? size,
     dynamic status = _Unset,

lib/src/messages/image_message.dart

@@ -175,7 +175,7 @@ class _ImageMessage extends ImageMessage {
     String? name,
     dynamic remoteId = _Unset,
     dynamic repliedMessage = _Unset,
-    dynamic roomId,
+    dynamic roomId = _Unset,
     dynamic showStatus = _Unset,
     num? size,
     dynamic status = _Unset,

lib/src/messages/system_message.dart

@@ -111,7 +111,7 @@ class _SystemMessage extends SystemMessage {
     dynamic metadata = _Unset,
     dynamic remoteId = _Unset,
     dynamic repliedMessage = _Unset,
-    dynamic roomId,
+    dynamic roomId = _Unset,
     dynamic showStatus = _Unset,
     dynamic status = _Unset,
     String? text,

lib/src/messages/text_message.dart

@@ -148,7 +148,7 @@ class _TextMessage extends TextMessage {
     dynamic previewData = _Unset,
     dynamic remoteId = _Unset,
     dynamic repliedMessage = _Unset,
-    dynamic roomId,
+    dynamic roomId = _Unset,
     dynamic showStatus = _Unset,
     dynamic status = _Unset,
     String? text,

lib/src/messages/unsupported_message.dart

@@ -105,7 +105,7 @@ class _UnsupportedMessage extends UnsupportedMessage {
     dynamic metadata = _Unset,
     dynamic remoteId = _Unset,
     dynamic repliedMessage = _Unset,
-    dynamic roomId,
+    dynamic roomId = _Unset,
     dynamic showStatus = _Unset,
     dynamic status = _Unset,
     dynamic updatedAt = _Unset,

lib/src/messages/video_message.dart

@@ -175,7 +175,7 @@ class _VideoMessage extends VideoMessage {
     String? name,
     dynamic remoteId = _Unset,
     dynamic repliedMessage = _Unset,
-    dynamic roomId,
+    dynamic roomId = _Unset,
     dynamic showStatus = _Unset,
     num? size,
     dynamic status = _Unset,