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