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server/vendor/symfony/service-contracts/Attribute/SubscribedService.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\Contracts\Service\Attribute;
+
+use Symfony\Contracts\Service\ServiceSubscriberTrait;
+
+/**
+ * Use with {@see ServiceSubscriberTrait} to mark a method's return type
+ * as a subscribed service.
+ *
+ * @author Kevin Bond <kevinbond@gmail.com>
+ */
+#[\Attribute(\Attribute::TARGET_METHOD)]
+final class SubscribedService
+{
+    /**
+     * @param string|null $key The key to use for the service
+     *                         If null, use "ClassName::methodName"
+     */
+    public function __construct(
+        public ?string $key = null
+    ) {
+    }
+}