From d7d91972d010ff063e2ba876cdd5390559ff0f39 Mon Sep 17 00:00:00 2001
From: Peter Gribanov <wcode404@gmail.com>
Date: Wed, 14 Aug 2019 17:44:29 +0300
Subject: [PATCH 1/2] add fix for Symfony >4.2 in Configuration

---
 src/DependencyInjection/Configuration.php | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index 9b5a554..2fbe7ac 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -19,8 +19,15 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $builder = new TreeBuilder();
-        $builder->root('gpslab_pagination')
+        if (method_exists('Symfony\Component\Config\Definition\Builder\TreeBuilder', 'getRootNode')) { // Symfony >4.2
+            $builder = new TreeBuilder('gpslab_pagination');
+            $root = $builder->getRootNode();
+        } else {
+            $builder = new TreeBuilder();
+            $root = $builder->root('gpslab_pagination');
+        }
+
+        $root
             ->addDefaultsIfNotSet()
             ->children()
                 ->scalarNode('max_navigate')

From b34979630909f40d181633cfd17e7897fb057986 Mon Sep 17 00:00:00 2001
From: Peter Gribanov <wcode404@gmail.com>
Date: Wed, 14 Aug 2019 17:53:50 +0300
Subject: [PATCH 2/2] change test code in Configuration class

---
 src/DependencyInjection/Configuration.php | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index 2fbe7ac..d4a85b2 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -19,12 +19,14 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        if (method_exists('Symfony\Component\Config\Definition\Builder\TreeBuilder', 'getRootNode')) { // Symfony >4.2
-            $builder = new TreeBuilder('gpslab_pagination');
-            $root = $builder->getRootNode();
+        $tree_builder = new TreeBuilder('gpslab_pagination');
+
+        if (method_exists($tree_builder, 'getRootNode')) {
+            // Symfony 4.2 +
+            $root = $tree_builder->getRootNode();
         } else {
-            $builder = new TreeBuilder();
-            $root = $builder->root('gpslab_pagination');
+            // Symfony 4.1 and below
+            $root = $tree_builder->root('gpslab_pagination');
         }
 
         $root
@@ -41,6 +43,6 @@ public function getConfigTreeBuilder()
                 ->end()
             ->end();
 
-        return $builder;
+        return $tree_builder;
     }
 }