whmcsProxmoxAddon/core/App/Controllers/AppControllers/Cron.php

<?php

namespace ModulesGarden\ProxmoxAddon\Core\App\Controllers\AppControllers;

use ModulesGarden\ProxmoxAddon\Core\App\Controllers\Interfaces\AppController;

class Cron implements AppController
{

    public function getControllerInstanceClass($callerName, $params)
    {
        // TODO: Implement runCalledController() method.
    }
}