Nearsoft\SeleniumClient\WebDriver::callSwitchTo PHP Method

    private function callSwitchTo($name, array $args)
    {
        $method = lcfirst(substr($name, 8));
        switch ($method) {
            case 'window':
            case 'frame':
                $values = call_user_func(array($this->switchTo(), $method), $args[0]);
                break;
            default:
                throw new \Exception('Invalid magic call:' . $name);
        }
        return $values;
    }