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backend/vendor/symfony/dependency-injection/Reference.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\DependencyInjection;
+
+/**
+ * Reference represents a service reference.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class Reference
+{
+    public function __construct(
+        private string $id,
+        private int $invalidBehavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE,
+    ) {
+    }
+
+    public function __toString(): string
+    {
+        return $this->id;
+    }
+
+    /**
+     * Returns the behavior to be used when the service does not exist.
+     */
+    public function getInvalidBehavior(): int
+    {
+        return $this->invalidBehavior ??= ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE;
+    }
+
+    public function __serialize(): array
+    {
+        $data = [];
+        foreach ((array) $this as $k => $v) {
+            if (false !== $i = strrpos($k, "\0")) {
+                $k = substr($k, 1 + $i);
+            }
+            if ('invalidBehavior' === $k && ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE === $v) {
+                continue;
+            }
+            $data[$k] = $v;
+        }
+
+        return $data;
+    }
+}