public function generateScopeBaseNode(ArrayNodeDefinition $rootNode, $scopeNodeName = 'system')
{
$contextNode = $rootNode->children()->arrayNode($scopeNodeName)->info('System configuration. First key is always a siteaccess or siteaccess group name')->example(array('my_siteaccess' => array('preferred_quote' => 'Let there be Light!', 'j_aime' => array('le_saucisson')), 'my_siteaccess_group' => array('j_aime' => array('la_truite_a_la_vapeur'))))->useAttributeAsKey('siteaccess_name')->requiresAtLeastOneElement()->normalizeKeys(false)->prototype('array')->children();
return $contextNode;
}