AbstractActionController:indexAction states it can only return ViewModel

[boesing]

Bug Report (non-critical)

Q	A
Version(s)	3.2.0

Summary

The pre-defined method AbstractActionController::indexAction states that it can only return ViewModel.
In Projects which implement their own FooController::indexAction, static analysis complains about an invalid return type if e.g. a Laminas\Http\Response is returned.

Current behavior

Static code analysis complains about invalid return type.

How to reproduce

<?php
declare(strict_types=1);

use Laminas\Http\Response;
use Laminas\Mvc\Controller\AbstractActionController;

final class FooController extends AbstractActionController
{
    public function indexAction(): Response
    {
        return new Response();
    }
}

Return type                                                            
         (Laminas\Http\Response) of method                                           
         FooController::indexAction() should be       
         compatible with return type (Laminas\View\Model\ViewModel) of method   
         Laminas\Mvc\Controller\AbstractActionController::indexAction()   

Expected behavior

No errors.