From 593cfabe28ed977f7ca709781d33cde03a757b32 Mon Sep 17 00:00:00 2001
From: Robin Chalas <robin.chalas@gmail.com>
Date: Sat, 1 Dec 2018 17:10:20 +0100
Subject: [PATCH] Fix deprecation on symfony/config 4.2

---
 DependencyInjection/Configuration.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 017342b..85a8e67 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -21,7 +21,13 @@ class Configuration implements ConfigurationInterface
     public function getConfigTreeBuilder()
     {
         $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('doctrine_migrations', 'array');
+
+        if (method_exists($treeBuilder, 'getRootNode')) {
+            $rootNode = $treeBuilder->getRootNode();
+        } else {
+            // BC layer for symfony/config 4.1 and older
+            $rootNode = $treeBuilder->root('doctrine_migrations', 'array');
+        }
 
         $organizeMigrationModes = $this->getOrganizeMigrationsModes();