infinito/application/src/Menu/Menu.php

<?php
// src/Menu/Menu.php

namespace App\Menu;

use App\Event\Menu\Topbar\UserMenuEvent;
use Knp\Menu\FactoryInterface;
use Knp\Menu\ItemInterface;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\HttpFoundation\RequestStack;

class Menu
{
    
    /**
     * @var EventDispatcherInterface
     */
    private $dispatcher;
    
    /**
     * @var FactoryInterface
     */
    private $factory;
    
    public function __construct(FactoryInterface $factory, EventDispatcherInterface $dispatcher)
    {
        $this->dispatcher = $dispatcher;
        $this->factory = $factory;
    }
    
    public function userTopbar(RequestStack $request): ItemInterface
    {
        $menu = $this->factory->createItem('root', array(
            'childrenAttributes'    => array(
                'class'             => 'navbar-nav mr-auto',
            ),
        ));
        
        $this->dispatcher->dispatch(
            UserMenuEvent::EVENT,
            new UserMenuEvent($this->factory, $menu, $request)
            );
        
        return $menu;
    }   
}