private function addService($file, $outputFile = null)
{
$result = $this->addFileIntoMountPoint('#llum_services', $file, $outputFile);
if ($result == 0) {
$txtFile = $outputFile == null ? $this->laravel_services_file : $outputFile;
$this->output->writeln('<info>File ' . $txtFile . ' updated.</info>');
}
return $result;
}