addTwigFormatOptions example

                unset($v['exception_controller']);

                return $v;
            })
        ->end();

        $this->addFormThemesSection($rootNode);
        $this->addGlobalsSection($rootNode);
        $this->addTwigOptions($rootNode);
        $this->addTwigFormatOptions($rootNode);
        $this->addMailerSection($rootNode);

        return $treeBuilder;
    }

    private function addFormThemesSection(ArrayNodeDefinition $rootNode): void
    {
        $rootNode
            ->fixXmlConfig('form_theme')
            ->children()
                ->arrayNode('form_themes')