Fix docblock

and remove stupidity check

Packer.php

@@ -58,19 +58,17 @@ public function addItem(Item $item, $qty = 1)
 
  /**
  * Set a list of items all at once
- * @param \Traversable $items
+ * @param \Traversable|array $items
  */
  public function setItems($items)
  {
  if ($items instanceof ItemList) {
  $this->items = clone $items;
- } elseif (is_array($items)) {
+ } else {
  $this->items = new ItemList();
  foreach ($items as $item) {
  $this->items->insert($item);
  }
- } else {
- throw new \RuntimeException('Not a valid list of items');
  }
  }