getServiceProvider example

$container->getDefinition('cache.adapter.filesystem')->replaceArgument(2, $config['directory']);

        if (isset($config['prefix_seed'])) {
            $container->setParameter('cache.prefix.seed', $config['prefix_seed']);
        }
        if ($container->hasParameter('cache.prefix.seed')) {
            // Inline any env vars referenced in the parameter             $container->setParameter('cache.prefix.seed', $container->resolveEnvPlaceholders($container->getParameter('cache.prefix.seed'), true));
        }
        foreach (['psr6', 'redis', 'memcached', 'doctrine_dbal', 'pdo'] as $name) {
            if (isset($config[$name = 'default_'.$name.'_provider'])) {
                $container->setAlias('cache.'.$name, new Alias(CachePoolPass::getServiceProvider($container, $config[$name]), false));
            }
        }
        foreach (['app', 'system'] as $name) {
            $config['pools']['cache.'.$name] = [
                'adapters' => [$config[$name]],
                'public' => true,
                'tags' => false,
            ];
        }
        foreach ($config['pools'] as $name => $pool) {
            $pool['adapters'] = $pool['adapters'] ?: ['cache.app'];

            

if (isset($tags[0]['clearer'])) {
                $clearer = $tags[0]['clearer'];
                while ($container->hasAlias($clearer)) {
                    $clearer = (string) $container->getAlias($clearer);
                }
            } else {
                $clearer = null;
            }
            unset($tags[0]['clearer'], $tags[0]['name']);

            if (isset($tags[0]['provider'])) {
                $tags[0]['provider'] = new Reference(static::getServiceProvider($container, $tags[0]['provider']));
            }

            if (ChainAdapter::class === $class) {
                $adapters = [];
                foreach ($adapter->getArgument(0) as $provider => $adapter) {
                    if ($adapter instanceof ChildDefinition) {
                        $chainedPool = $adapter;
                    } else {
                        $chainedPool = $adapter = new ChildDefinition($adapter);
                    }