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backend/vendor/symfony/dependency-injection/Argument/ArgumentTrait.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\Argument;
+
+/**
+ * Helps reduce the size of the dumped container when using php-serialize.
+ *
+ * @internal
+ */
+trait ArgumentTrait
+{
+    public function __serialize(): array
+    {
+        $data = [];
+        foreach ((array) $this as $k => $v) {
+            if (null === $v) {
+                continue;
+            }
+            if (false !== $i = strrpos($k, "\0")) {
+                $k = substr($k, 1 + $i);
+            }
+            $data[$k] = $v;
+        }
+
+        return $data;
+    }
+}