RouterRebuildCommand.php

<?php
/**
 * @file
 * Contains \Drupal\AppConsole\Command\RouterRebuildCommand.
 */

namespace Drupal\AppConsole\Command;

use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

class RouterRebuildCommand extends ContainerAwareCommand
{

    protected function configure()
    {
        $this
          ->setName('router:rebuild')
          ->setDescription($this->trans('commands.router.rebuild.description'));
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $output->writeln('');
        $output->writeln('[+] <comment>' . $this->trans('commands.router.rebuild.messages.rebuilding') . '</comment>');
        $container = $this->getContainer();
        $router_builder = $container->get('router.builder');
        $router_builder->rebuild();
        $output->writeln('[+] <info>' . $this->trans('commands.router.rebuild.messages.completed') . '</info>');
    }
}