From 1d66d148314fbc01e2b1d53c1020f3a5dff5c6a2 Mon Sep 17 00:00:00 2001
From: David Ward <dward@wevad.com>
Date: Thu, 27 Dec 2018 12:32:52 -0800
Subject: [PATCH] fix root node deprecation in symfony-config > 4.1

---
 DependencyInjection/Configuration.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index d2fd657..07fea7a 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -17,8 +17,8 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('tetranz_select2_entity');
+        $treeBuilder = new TreeBuilder('tetranz_select2_entity');
+        $rootNode = \method_exists($treeBuilder, 'getRootNode') ? $treeBuilder->getRootNode() : $treeBuilder->root('tetranz_select2_entity');
 
         $rootNode
                 ->children()