Implement IteratorAggregate

src/Model/Metadata.php

@@ -10,7 +10,7 @@ use Pcm\MetadataBundle\Interface\MetadataInterface;
 /**
  * Store scalar metadata on an entity.
  */
-final class Metadata implements MetadataInterface
+final class Metadata implements MetadataInterface, \IteratorAggregate
 {
     /**
      * @param array<string, scalar|scalar[]> &$metadata
@@ -19,6 +19,11 @@ final class Metadata implements MetadataInterface
     {
     }
 
+    public function getIterator(): \Traversable
+    {
+        return new \ArrayIterator($this->metadata);
+    }
+
     public function get(string $key): mixed
     {
         if (!$this->isSet($key)) {