Add generic types to traversable implementations

Author: derrabus

Metadata/InMemoryMetadataStore.php

@@ -24,6 +24,9 @@ final class InMemoryMetadataStore implements MetadataStoreInterface
     private $placesMetadata;
     private $transitionsMetadata;
 
+    /**
+     * @param \SplObjectStorage<Transition, array>|null $transitionsMetadata
+     */
     public function __construct(array $workflowMetadata = [], array $placesMetadata = [], \SplObjectStorage $transitionsMetadata = null)
     {
         $this->workflowMetadata = $workflowMetadata;

TransitionBlockerList.php

@@ -15,6 +15,8 @@
  * A list of transition blockers.
  *
  * @author Grégoire Pineau <[email protected]>
+ *
+ * @implements \IteratorAggregate<int, TransitionBlocker>
  */
 final class TransitionBlockerList implements \IteratorAggregate, \Countable
 {
@@ -58,11 +60,6 @@ public function isEmpty(): bool
         return !$this->blockers;
     }
 
-    /**
-     * {@inheritdoc}
-     *
-     * @return \Traversable<TransitionBlocker>
-     */
     public function getIterator(): \Traversable
     {
         return new \ArrayIterator($this->blockers);