src/DependencyInjection/Configuration.php
private function getRoutingNode()
    {
        $node = $this->createTreeBuilderNode('_routing');

        $node
            ->children()
                ->scalarNode('required')->end()
                ->scalarNode('path')->end()
            ->end()
        ;

        return $node;
    }
private function getRoutingNode()
    {
        $node = $this->createTreeBuilderNode('_routing');

        $node
            ->children()
                ->scalarNode('required')->end()
                ->scalarNode('path')->end()
            ->end()
        ;

        return $node;
    }
Returns the array node used for "_routing".