public function normalize_keywords(array $keywords)
{
$normalized = parent::normalize_keywords($keywords);
$callback = "stemword";
$tagger = __NAMESPACE__ . '\\POS\\' . ucfirst($this->lang) . '\\Tagger';
if (is_callable($callback)) {
return array_map(function ($keyword) use($callback) {
return $callback($keyword, 'french', 'UTF_8');
}, $normalized);
}
return $normalized;
}
