Adjustments as per codereview

src/Collection/Iterator/FilterIterator.php

@@ -43,7 +43,7 @@ class FilterIterator extends Collection
      * in the current iteration, the key of the element and the passed $items iterator
      * as arguments, in that order.
      *
-     * @param \Iterator|\Traversable|array $items The items to be filtered.
+     * @param \Traversable|array $items The items to be filtered.
      * @param callable $callback Callback.
      */
     public function __construct($items, callable $callback)