public function editCategoryGroup($category_group_id = null)
    {
        $this->setCategoryGroup($category_group_id);
        $this->setTitleEditCategoryGroup();
        $this->setBreadcrumbEditCategoryGroup();

        $this->setData('category_group', $this->data_category_group);
        $this->setData('can_delete', $this->canDeleteCategoryGroup());
        $this->setData('languages', $this->language->getList(array('enabled' => true)));
        $this->setData('category_group_types', $this->category_group->getTypes());

        $this->submitEditCategoryGroup();
        $this->outputEditCategoryGroup();
    }