23         $rootNode = $treeBuilder->root('wiki_tag');

    23         $rootNode = $treeBuilder->root('wiki_tag');

    24         

    24         

    25         $rootNode

    25         $rootNode

    26             ->children()

    26             ->children()

    27                 ->scalarNode('route_for_documents_by_tag')->defaultNull()->end()

    27                 ->scalarNode('route_for_documents_by_tag')->defaultNull()->end()

    28                 ->scalarNode('document_class')->isRequired()->end()

    29                 ->scalarNode('document_class')->isRequired()->end()

    29                 ->scalarNode('document_id_column')->defaultValue('id')->end()

    30                 ->scalarNode('document_id_column')->defaultValue('id')->end()

    30             ->end()

    31             ->end()

    31             ->fixXmlConfig('field')

    32             ->fixXmlConfig('field')

    32             ->children()

    33             ->children()