How to use the fbtftp.base_handler.BaseHandler function in fbtftp

def print_server_stats(stats):
    """
    Print server stats - see the ServerStats class
    """
    # NOTE: remember to reset the counters you use, to allow the next cycle to
    #       start fresh
    counters = stats.get_and_reset_all_counters()
    logging.info("Server stats - every %d seconds" % stats.interval)
    if "process_count" in counters:
        logging.info(
            "Number of spawned TFTP workers in stats time frame : %d"
            % counters["process_count"]
        )


class StaticHandler(BaseHandler):
    def __init__(self, server_addr, peer, path, options, root, stats_callback):
        self._root = root
        super().__init__(server_addr, peer, path, options, stats_callback)

    def get_response_data(self):
        return FileResponseData(os.path.join(self._root, self._path))


class StaticServer(BaseServer):
    def __init__(
        self,
        address,
        port,
        retries,
        timeout,
        root,