private function getIdNode()
    {
        $node = $this->createTreeBuilderNode('_id');

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

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

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

        return $node;
    }
private function getIdNode ( ) { $ node = $ this -> createTreeBuilderNode ( '_id' ) ; $ node -> children ( ) -> scalarNode ( 'path' ) -> end ( ) -> end ( ) ; return $ node ; }
Returns the array node used for "_id".
Returns the array node used for _id .