protected function configure()
{
parent::configure();
$this->setName('kb:generate:sitemap')->setDescription('Generate knp-bundles sitemap.')->setDefinition(array(new InputOption('em', null, InputOption::VALUE_OPTIONAL, 'Used entity manager.', 'default'), new InputOption('spaceless', 'spls', InputOption::VALUE_OPTIONAL, 'Output spaceless sitemap.', 0)));
}