def METHOD_NAME(self) -> bool:
    if self._is_connected():
        return True
    try:
        LOG.debug(f'Connect statistic middleware server: {self._stat_address}')
        self._stat_mng_client = AddrPickableDataClient(self._stat_address)
        return True
    except BaseException as exc:
        if not isinstance(exc, ConnectionRefusedError):
            LOG.error(f'Failed to connect statistic middleware server: {self._stat_address}', exc_info=exc)
        else:
            LOG.debug(f'Failed to connect statistic middleware server: {self._stat_address}, error: {str(exc)}')
        return False