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vendor/symfony/http-kernel/Bundle/BundleExtension.php

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+<?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\HttpKernel\Bundle;
+
+use Symfony\Component\Config\Definition\Configuration;
+use Symfony\Component\Config\Definition\ConfigurationInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Extension\ConfigurableExtensionInterface;
+use Symfony\Component\DependencyInjection\Extension\Extension;
+use Symfony\Component\DependencyInjection\Extension\ExtensionTrait;
+use Symfony\Component\DependencyInjection\Extension\PrependExtensionInterface;
+use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
+
+/**
+ * @author Yonel Ceruto <yonelceruto@gmail.com>
+ *
+ * @internal
+ */
+class BundleExtension extends Extension implements PrependExtensionInterface
+{
+    use ExtensionTrait;
+
+    public function __construct(
+        private ConfigurableExtensionInterface $subject,
+        private string $alias,
+    ) {
+    }
+
+    public function getConfiguration(array $config, ContainerBuilder $container): ?ConfigurationInterface
+    {
+        return new Configuration($this->subject, $container, $this->getAlias());
+    }
+
+    public function getAlias(): string
+    {
+        return $this->alias;
+    }
+
+    public function prepend(ContainerBuilder $container): void
+    {
+        $callback = function (ContainerConfigurator $configurator) use ($container) {
+            $this->subject->prependExtension($configurator, $container);
+        };
+
+        $this->executeConfiguratorCallback($container, $callback, $this->subject);
+    }
+
+    public function load(array $configs, ContainerBuilder $container): void
+    {
+        $config = $this->processConfiguration($this->getConfiguration([], $container), $configs);
+
+        $callback = function (ContainerConfigurator $configurator) use ($config, $container) {
+            $this->subject->loadExtension($config, $configurator, $container);
+        };
+
+        $this->executeConfiguratorCallback($container, $callback, $this->subject);
+    }
+}