/**
* @param string $word
* @param int $maxVariants
* @param string $article
* @return ArticleWord
*/
public static function stemm($word, $maxVariants = null, &$article = null)
{
/* @var ArticleWord $word */
$word = parent::stemm($word, $maxVariants);
if ($article !== null) {
$word->article =& $article;
}
return $word;
}