meeting the requirements of a static analyzer

app/Http/Controllers/ChatController.php

@@ -2,8 +2,6 @@
 
 namespace App\Http\Controllers;
 
-use App\Events\ChatMessageUpdated;
-use App\Messages\ChatMessage;
 use App\Models\Chat;
 use App\Models\User;
 use Illuminate\Contracts\View\Factory as ViewFactory;
@@ -45,18 +43,6 @@ class ChatController extends Controller
         );
     }
 
-    /*
-    * public function create(): void
-    {
-        ChatMessageUpdated::dispatch(
-            new ChatMessage(
-                time(),
-                'some text '.md5(' '.time())
-            )
-        );
-    }
-    */
-
     public function show(int $lastChatUser): View|ViewFactory
     {
         $lastChatUser = User::find($lastChatUser);
@@ -85,7 +71,7 @@ class ChatController extends Controller
         );
     }
 
-    private function makeChanName(int $from, int $to): string
+    private function makeChanName(?int $from = null, ?int $to = null): string
     {
         return (int) $from < (int) $to
             ? $from.'_'.$to