public function addTokenizer($tokenizer)
    {
        if (! $tokenizer instanceof \Org\Heigl\Hyphenator\Tokenizer\Tokenizer) {
            $tokenizer = '\\Org\\Heigl\Hyphenator\\Tokenizer\\' . ucfirst($tokenizer) . 'Tokenizer';
            $tokenizer = new $tokenizer();
        }
        $this->tokenizers->add($tokenizer);

        return $this;
    }