public function driver()
    {
        $args = func_get_args();
        $props = Driver::parseArgs($args);
        $newProps = $this->callHookHandler('beforeCreateDriver', $props);
        if (is_array($newProps)) {
            $props = array_merge($props, $newProps);
        }
        extract($props);
        $driver = Driver::create($this, $name, $weight, $backup, $work);
        $this->drivers[$name] = $driver;
        $this->callHookHandler('afterCreateDriver', $driver);

        return $driver;
    }