From 14f9d9eac9df6074f7643efdef9fa2828f33e800 Mon Sep 17 00:00:00 2001
From: robertfausk <robertfreigang@gmx.de>
Date: Sun, 29 Mar 2020 17:45:23 +0200
Subject: [PATCH] Add compatibility for symfony/config 3.4

by fixing
Error: Call to undefined method Symfony\Component\Config\Definition\Builder\TreeBuilder::getRootNode()
---
 src/ServiceContainer/PantherConfiguration.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/ServiceContainer/PantherConfiguration.php b/src/ServiceContainer/PantherConfiguration.php
index 75c89bc..aa1225c 100644
--- a/src/ServiceContainer/PantherConfiguration.php
+++ b/src/ServiceContainer/PantherConfiguration.php
@@ -33,7 +33,13 @@ public function addOptionsNode(): ArrayNodeDefinition
     {
         $treeBuilder = new TreeBuilder('options');
 
-        $node = $treeBuilder->getRootNode()
+        if (\method_exists($treeBuilder, 'getRootNode')) {
+            $root = $treeBuilder->getRootNode();
+        } else {
+            $root = $treeBuilder->root('options');
+        }
+
+        $node = $root
             ->info(
                 "These are the options passed as first argument to PantherTestCaseTrait::createPantherClient client constructor."
             )