RainLab\Builder\Classes\MigrationModel::getPluginUpdatesPath PHP Метод

    protected function getPluginUpdatesPath($fileName = null)
    {
        $pluginCodeObj = $this->getPluginCodeObj();
        $filePath = '$/' . $pluginCodeObj->toFilesystemPath() . '/updates';
        $filePath = File::symbolizePath($filePath);
        if ($fileName !== null) {
            return $filePath .= '/' . $fileName;
        }
        return $filePath;
    }