From fa28731786627e4378a205e6c2a265c404e19204 Mon Sep 17 00:00:00 2001
From: David Greminger <david.greminger@1up.io>
Date: Mon, 3 Dec 2018 09:32:12 +0100
Subject: [PATCH] Update bundle configuration for Symfony 4.2 change, see
 https://github.com/symfony/symfony/blob/master/UPGRADE-4.2.md#config)

---
 DependencyInjection/Configuration.php | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index cf88563f..cb39ca16 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -9,8 +9,14 @@ class Configuration implements ConfigurationInterface
 {
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('oneup_uploader');
+        $treeBuilder = new TreeBuilder('oneup_uploader');
+
+        if (method_exists($treeBuilder, 'getRootNode')) {
+            $rootNode = $treeBuilder->getRootNode();
+        } else {
+            // BC layer for symfony/config 4.1 and older
+            $rootNode = $treeBuilder->root('oneup_uploader');
+        }
 
         $rootNode
             ->children()