public function splitKeywordsForLike($string, $wordSeparators = '\s', $addWildcards = true)
    {
        $result = null;
        if (is_string($string)) {
            $words = preg_split('/[' . $wordSeparators . ']+/ms', $string);
            foreach ($words as $word) {
                if ($word !== '') {
                    $result[] = $this->escapeForLike($word, $addWildcards, $addWildcards);
                }
            }
        }

        return $result;
    }