LegacyPhpDumper example

    protected function dumpContainer(ConfigCache $cache, ContainerBuilder $container, $class, $baseClass)
    {
        // cache the container         $dumper = new LegacyPhpDumper($container);

        $content = $dumper->dump(['class' => $class, 'base_class' => $baseClass]);

        if (!$this->debug) {
            $content = SymfonyKernel::stripComments($content);
        }

        $cache->write($content, $container->getResources());

        $xmlDumper = new XmlDumper($container);
        $xml = $xmlDumper->dump(['class' => $class, 'base_class' => $baseClass]);