Sylius\Bundle\PaymentBundle\DependencyInjection\Configuration::getConfigTreeBuilder PHP Метод

    public function getConfigTreeBuilder()
    {
        $treeBuilder = new TreeBuilder();
        $rootNode = $treeBuilder->root('sylius_payment');
        $rootNode->addDefaultsIfNotSet()->children()->scalarNode('driver')->defaultValue(SyliusResourceBundle::DRIVER_DOCTRINE_ORM)->end()->arrayNode('gateways')->useAttributeAsKey('name')->prototype('scalar')->end()->end();
        $this->addResourcesSection($rootNode);
        return $treeBuilder;
    }