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    <h3>Editing: RouteConfigurator.php</h3>
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/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier &lt;fabien@symfony.com&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Routing\Loader\Configurator;

use Symfony\Component\Routing\RouteCollection;

/**
 * @author Nicolas Grekas &lt;p@tchwork.com&gt;
 */
class RouteConfigurator
{
    use Traits\AddTrait;
    use Traits\HostTrait;
    use Traits\RouteTrait;

    protected $parentConfigurator;

    public function __construct(RouteCollection $collection, RouteCollection $route, string $name = '', ?CollectionConfigurator $parentConfigurator = null, ?array $prefixes = null)
    {
        $this-&gt;collection = $collection;
        $this-&gt;route = $route;
        $this-&gt;name = $name;
        $this-&gt;parentConfigurator = $parentConfigurator; // for GC control
        $this-&gt;prefixes = $prefixes;
    }

    /**
     * Sets the host to use for all child routes.
     *
     * @param string|array $host the host, or the localized hosts
     *
     * @return $this
     */
    final public function host($host): self
    {
        $this-&gt;addHost($this-&gt;route, $host);

        return $this;
    }
}
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