private function addSeoSection(ArrayNodeDefinition $node)
{
$node->children()->arrayNode('seo')->addDefaultsIfNotSet()->children()->arrayNode('product')->addDefaultsIfNotSet()->children()->scalarNode('site')->defaultValue('@sonataproject')->end()->scalarNode('creator')->defaultValue('@th0masr')->end()->scalarNode('domain')->defaultValue('http://demo.sonata-project.org')->end()->scalarNode('media_prefix')->defaultValue('http://demo.sonata-project.org')->end()->scalarNode('media_format')->defaultValue('reference')->end()->end()->end()->end()->end()->end();
}