public static function camelize($lowerCaseAndUnderscoredWord)
    {
        if (!($result = self::_cache(__FUNCTION__, $lowerCaseAndUnderscoredWord))) {
            $result = str_replace(' ', '', Inflector::humanize($lowerCaseAndUnderscoredWord));
            self::_cache(__FUNCTION__, $lowerCaseAndUnderscoredWord, $result);
        }
        return $result;
    }