protected function _getNodeType($node)
{
$parent = current($node->xpath('parent::*'));
$grandParent = current($parent->xpath('parent::*'));
if ($grandParent->getName() == 'config') {
return 'section';
}
switch ($parent->getName()) {
case 'groups':
return 'group';
case 'fields':
return 'field';
default:
return 'unknown';
}
}