default services conflit ?

old.vendor/symfony/validator/Constraints/Unique.php

@@ -0,0 +1,31 @@
+<?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\Validator\Constraints;
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * @Annotation
+ * @Target({"PROPERTY", "METHOD", "ANNOTATION"})
+ *
+ * @author Yevgeniy Zholkevskiy <zhenya.zholkevskiy@gmail.com>
+ */
+class Unique extends Constraint
+{
+    public const IS_NOT_UNIQUE = '7911c98d-b845-4da0-94b7-a8dac36bc55a';
+
+    protected static $errorNames = [
+        self::IS_NOT_UNIQUE => 'IS_NOT_UNIQUE',
+    ];
+
+    public $message = 'This collection should contain only unique elements.';
+}