public function apply_runtime_post_processing($html, $vars = array())
 {
     $handlers = PerchSystem::get_registered_template_handlers();
     if (PerchUtil::count($handlers)) {
         foreach ($handlers as $handlerClass) {
             $Handler = new $handlerClass();
             $html = $Handler->render_runtime($html, $this);
         }
     }
     $html = $this->render_settings($html);
     $html = $this->render_forms($html, $vars);
     $html = $this->render_layouts($html, $vars);
     return $html;
 }