diff --git a/src/Lists/HashList.php b/src/Lists/HashList.php
index e704f27..3bec60e 100644
--- a/src/Lists/HashList.php
+++ b/src/Lists/HashList.php
@@ -14,7 +14,6 @@
  */
 class HashList extends AbstractItemList
 {
-
     /**
      *
      * @param   Hashable    $item
@@ -34,17 +33,15 @@ public function add($item)
 
         return $this;
     }
-
     /**
      * {@inheritdoc}
      *
      * @return SimpleAssocIterator
      */
-    public function getIterator()
+    public function getIterator(): \Traversable
     {
         return new SimpleAssocIterator($this->getAll());
     }
-
     /**
      * {@inheritdoc}
      */
@@ -63,7 +60,6 @@ public function getNext($index)
             }
         }
     }
-
     /**
      * {@inheritdoc}
      */
@@ -82,7 +78,6 @@ public function getPrevious($index)
             }
         }
     }
-
     /**
      * Merge an instance of an implementation of the <code>ItemListable</code>
      * interface with the present one.
@@ -94,5 +89,4 @@ public function merge(ItemListable $iL)
     {
         $this->items = array_merge($iL->getAll(), $this->getAll());
     }
-
 }