code: public function render($page, $data = null)
      {
          if ($data) {
              $this->appendData($data);
          }
          if (!$this->parent) {
              $this->parent = $page;
          }
          $this->page = $page;
          $this->includePage($this->cascade());
      }
docs: /*
  Render specific template
  
  $page - page to render
  $data - data to include with render [array]