public function _initBaseException($message = null, $code = null, RootException $previous = null)
    {
        $message = is_null($message)
            ? ''
            : $this->_normalizeString($message);
        $code = is_null($code)
            ? 0
            : $this->_normalizeInt($code);

        $this->_initParent($message, $code, $previous);
    }