CreateSiteCommand.php

<?php

namespace Example\Bundle\ConsumerSiteBundle\Command;

use eZ\Publish\API\Repository\Values\Content\Query\Criterion;
use eZ\Publish\API\Repository\Values\Content\Query;
use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

class CreateSiteCommand extends ContainerAwareCommand
{
    protected function configure()
    {
        $this->setName( 'consumer_site:create-site' );
    }

    protected function execute( InputInterface $input, OutputInterface $output )
    {
        $sa = $this->getContainer()->get( 'ezpublish.siteaccess' );
        $output->writeln(print_r($sa, true));

        /** @var $configResolver \eZ\Publish\Core\MVC\ConfigResolverInterface **/
        $configResolver = $this->getContainer()->get( 'ezpublish.config.resolver' );
        $prefix = $configResolver->getParameter('io.legacy_url_prefix');

        $output->writeln(print_r($prefix, true));
    }
}

output.txt

eZ\Publish\Core\MVC\Symfony\SiteAccess Object
(
    [name] => eng
    [matchingType] => cli
    [matcher] => 
)

var/storage