/**
* Show an information of what will happen
*
* @return void
*/
public function preview()
{
parent::preview();
$fn = $this->get('callback');
if (is_string($fn)) {
$name = $fn;
} elseif (is_array($fn)) {
$name = (is_object($fn[0]) ? get_class($fn[0]) . '->' : $fn[0] . '::') . $fn[1];
} else {
$name = 'anonymous function';
}
$this->console->output('Calling ' . $name, OutputInterface::VERBOSITY_DEBUG);
}
