/**
  * Create a new NavigationRenderer
  *
  * @param   Navigation  $navigation
  * @param   bool        $skipOuterElement
  */
 public function __construct(Navigation $navigation, $skipOuterElement = false)
 {
     $this->skipOuterElement = $skipOuterElement;
     $this->iterator = $navigation->getIterator();
     $this->navigation = $navigation;
     $this->content = array();
 }