private function _initialize()
    {
        $params = $this->getParameters();
        if ($params !== null) {
            for ($i = 0, $paramsCount = count($params); $i < $paramsCount; $i++) {
                if (self::TAB_LENGTH_KEY === $params[$i]->getName()) {
                    $this->tabLength = $params[$i]->getValue();
                    break;
                }
            }
        }
    }