public function overviewAction() {
        if ($this->overviewSnippets) {
            $params = $this->_processParameters($this->overviewParameters);

            $menuList          = $this->menu->getMenuList();
            $menuList->addParameterSources($this->request, $this->menu->getParameterSource());
            $menuList->addCurrentParent($this->_('Cancel'));
            $params['buttons'] = $menuList;
            $this->addSnippets($this->overviewSnippets, $params);
        }
    }