createStockSection example

->append($this->createDeploymentSection())
                ->append($this->createMediaSection())
                ->append($this->createDalSection())
                ->append($this->createMailSection())
                ->append($this->createFeatureSection())
                ->append($this->createLoggerSection())
                ->append($this->createCacheSection())
                ->append($this->createHtmlSanitizerSection())
                ->append($this->createIncrementSection())
                ->append($this->createTwigSection())
                ->append($this->createDompdfSection())
                ->append($this->createStockSection())
            ->end();

        return $treeBuilder;
    }

    private function createFilesystemSection(): ArrayNodeDefinition
    {
        $rootNode = (new TreeBuilder('filesystem'))->getRootNode();
        $rootNode
            ->children()
                ->arrayNode('private')