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vendor/ramsey/uuid/src/Rfc4122/NilTrait.php

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+<?php
+
+/**
+ * This file is part of the ramsey/uuid library
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
+ * @license http://opensource.org/licenses/MIT MIT
+ */
+
+declare(strict_types=1);
+
+namespace Ramsey\Uuid\Rfc4122;
+
+/**
+ * Provides common functionality for nil UUIDs
+ *
+ * The nil UUID is special form of UUID that is specified to have all 128 bits
+ * set to zero.
+ *
+ * @link https://tools.ietf.org/html/rfc4122#section-4.1.7 RFC 4122, § 4.1.7: Nil UUID
+ *
+ * @psalm-immutable
+ */
+trait NilTrait
+{
+    /**
+     * Returns the bytes that comprise the fields
+     */
+    abstract public function getBytes(): string;
+
+    /**
+     * Returns true if the byte string represents a nil UUID
+     */
+    public function isNil(): bool
+    {
+        return $this->getBytes() === "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+    }
+}