the latest code

vendor/league/uri-interfaces/Contracts/Transformable.php

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+<?php
+
+/**
+ * League.Uri (https://uri.thephpleague.com)
+ *
+ * (c) Ignace Nyamagana Butera <nyamsprod@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\Uri\Contracts;
+
+interface Transformable
+{
+    /**
+     * Apply a transformation to this instance and return a new instance.
+     *
+     * This method MUST retain the state of the current instance, and return
+     * a new instance of the same type.
+     *
+     * @param callable(static): static $callback
+     */
+    public function transform(callable $callback): static;
+}