protected function run4($stage)
{
$this->console->out("Add foreign key for `role`.`cat_id` to `role_categories`.`id`");
$this->db->Execute("\n ALTER TABLE `roles` \n ADD CONSTRAINT `fk_bc65c689039a0d77`\n FOREIGN KEY (`cat_id`)\n REFERENCES `role_categories` (`id`)\n ON DELETE RESTRICT\n ON UPDATE CASCADE");
}