How to use the imjoy.helper.kill_process function in imjoy

def kill_plugin(engine, pid):
    """Kill plugin."""
    logger = engine.logger
    plugins = engine.store.plugins
    plugin_sids = engine.store.plugin_sids
    plugin_signatures = engine.store.plugin_signatures
    if pid in plugins:
        try:
            plugins[pid]["abort"].set()
            plugins[pid]["aborting"] = asyncio.get_event_loop().create_future()
            if plugins[pid]["process_id"] is not None:
                kill_process(logger, plugins[pid]["process_id"])
        except Exception as exc:  # pylint: disable=broad-except
            logger.error("Failed to kill plugin %s, error: %s", pid, exc)
        if "sid" in plugins[pid]:
            if plugins[pid]["sid"] in plugin_sids:
                del plugin_sids[plugins[pid]["sid"]]

        if plugins[pid]["signature"] in plugin_signatures:
            logger.info(
                "Cleaning up killed plugin signature %s", plugins[pid]["signature"]
            )
            del plugin_signatures[plugins[pid]["signature"]]
        logger.info("Cleaning up killed plugin %s", pid)
        del plugins[pid]

progress = 0
        logging_callback(progress, type="progress")

        while True:
            out = process.stdout.read(1)
            if out == "" and process.poll() is not None:
                break
            os.write(stdfn, out)
            sys.stdout.flush()
            if abort.is_set() or process.poll() is not None:
                break
            time.sleep(0)

        logger.info("Plugin aborting")
        kill_process(logger, process.pid)

        outputs, errors = process.communicate()
        if outputs is not None:
            outputs = str(outputs, "utf-8")
        if errors is not None:
            errors = str(errors, "utf-8")
        exit_code = process.returncode
    except Exception as exc:  # pylint: disable=broad-except
        logger.error(traceback.format_exc())
        outputs, errors = "", str(exc)
        exit_code = 100
    if exit_code == 0:
        logging_callback(f"Plugin process exited with code {exit_code}")
        stop_callback(True, outputs)
        return True