[FEATURE] Introduce NavigationTitle

(cherry picked from commit caa17bf)

Author: linawolf

packages/guides/src/Event/ModifyDocumentEntryAdditionalData.php

@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of phpDocumentor.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @link https://phpdoc.org
+ */
+
+namespace phpDocumentor\Guides\Event;
+
+use phpDocumentor\Guides\Compiler\CompilerContextInterface;
+use phpDocumentor\Guides\Nodes\DocumentNode;
+use phpDocumentor\Guides\Nodes\Node;
+
+final class ModifyDocumentEntryAdditionalData
+{
+    /** @param array<string, Node> $additionalData */
+    public function __construct(
+        private array $additionalData,
+        private readonly DocumentNode $documentNode,
+        private readonly CompilerContextInterface $compilerContext,
+    ) {
+    }
+
+    /** @return array<string, Node> */
+    public function getAdditionalData(): array
+    {
+        return $this->additionalData;
+    }
+
+    /** @param array<string, Node> $additionalData */
+    public function setAdditionalData(array $additionalData): ModifyDocumentEntryAdditionalData
+    {
+        $this->additionalData = $additionalData;
+
+        return $this;
+    }
+
+    public function getDocumentNode(): DocumentNode
+    {
+        return $this->documentNode;
+    }
+
+    public function getCompilerContext(): CompilerContextInterface
+    {
+        return $this->compilerContext;
+    }
+}