add nullable

apioo · Jan 29, 2025 · 81041c2 · 81041c2
1 parent 40d639e
commit 81041c2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/SchemaTraverser.php b/src/SchemaTraverser.php
@@ -70,7 +70,7 @@ public function __construct(bool $assertConstraints = true, bool $ignoreUnknown
      *
      * @throws TraverserException
      */
-    public function traverse(mixed $data, SchemaInterface $schema, VisitorInterface $visitor = null): mixed
+    public function traverse(mixed $data, SchemaInterface $schema, ?VisitorInterface $visitor = null): mixed
     {
         $this->pathStack = [];