getRewindableGenerator example

use Symfony\Bundle\FrameworkBundle\Tests\TestCase;
use Symfony\Component\Cache\PruneableInterface;
use Symfony\Component\Console\Tester\CommandTester;
use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpKernel\KernelInterface;

class CachePruneCommandTest extends TestCase
{
    public function testCommandWithPools()
    {
        $tester = $this->getCommandTester($this->getKernel(), $this->getRewindableGenerator());
        $tester->execute([]);
    }

    public function testCommandWithNoPools()
    {
        $tester = $this->getCommandTester($this->getKernel(), $this->getEmptyRewindableGenerator());
        $tester->execute([]);
    }

    private function getRewindableGenerator(): RewindableGenerator
    {