private function getFormNode(): NodeDefinition
    {
        $treeBuilder = new TreeBuilder('form');

        return $treeBuilder
            ->getRootNode()
            ->addDefaultsIfNotSet()
            ->children()
                ->scalarNode('novalidate')
                    ->info('Information if HTML5 inline validation is disabled')
                    ->defaultFalse()
                ->end()
            ->end()
        ;
    }