createApiSection example

public function getConfigTreeBuilder(): TreeBuilder
    {
        $treeBuilder = new TreeBuilder('shopware');

        $rootNode = $treeBuilder->getRootNode();
        $rootNode
            ->children()
                ->append($this->createNumberRangeSection())
                ->append($this->createProfilerSection())
                ->append($this->createFilesystemSection())
                ->append($this->createCdnSection())
                ->append($this->createApiSection())
                ->append($this->createStoreSection())
                ->append($this->createCartSection())
                ->append($this->createSalesChannelContextSection())
                ->append($this->createAdminWorkerSection())
                ->append($this->createAutoUpdateSection())
                ->append($this->createSitemapSection())
                ->append($this->createDeploymentSection())
                ->append($this->createMediaSection())
                ->append($this->createDalSection())
                ->append($this->createMailSection())
                ->append($this->createFeatureSection())