public function listProductClass()
    {
        $this->actionListProductClass();
        $this->setTitleListProductClass();
        $this->setBreadcrumbListProductClass();
        $this->setFilterListProductClass();
        $this->setPagerListProductClass();

        $this->setData('product_classes', $this->getListProductClass());
        $this->outputListProductClass();
    }