| private fallbackOutput ( Symfony\Component\Console\Output\OutputInterface $output = null ) : Symfony\Component\Console\Output\OutputInterface | ||
| $output | Symfony\Component\Console\Output\OutputInterface | |
| return | Symfony\Component\Console\Output\OutputInterface | |
private function fallbackOutput(OutputInterface $output = null)
{
if (null !== $output) {
return $output;
}
if ($this->getHelperSet()->has('io')) {
/** @var $helper IoHelper */
$helper = $this->getHelperSet()->get('io');
$output = $helper->getOutput();
}
if (null === $output) {
$output = new NullOutput();
}
return $output;
}