From 560d03cf68e3e9f1b9c4436e9c51572459fef1a3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jib=C3=A9=20Barth?= <barth.jib@gmail.com>
Date: Wed, 5 Dec 2018 15:04:55 +0100
Subject: [PATCH] Fix deprecation for symfony/config 4.2+

---
 src/DependencyInjection/Configuration.php | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index c06526748..2c35a8692 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -21,8 +21,13 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('maker');
+        $treeBuilder = new TreeBuilder('maker');
+        if (\method_exists($treeBuilder, 'getRootNode')) {
+            $rootNode = $treeBuilder->getRootNode();
+        } else {
+            // BC layer for symfony/config 4.1 and older
+            $rootNode = $treeBuilder->root('maker');
+        }
 
         $rootNode
             ->children()