<?php namespace Wallabag\AnnotationBundle\DependencyInjection; use Symfony\Component\Config\Definition\Builder\TreeBuilder; use Symfony\Component\Config\Definition\ConfigurationInterface; class Configuration implements ConfigurationInterface { /** * {@inheritdoc} */ public function getConfigTreeBuilder() { $treeBuilder = new TreeBuilder(); $rootNode = $treeBuilder->root('wallabag_annotation'); return $treeBuilder; } }