Edit File: ClassTrait.php
<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\DependencyInjection\Loader\Configurator\Traits; trait ClassTrait { /** * Sets the service class. * * @return $this */ final public function class(?string $class): self { $this->definition->setClass($class); return $this; } }