napi_async_cleanup_hook_handle

napi_add_async_cleanup_hook 返回的不透明值。当异步清理事件链完成时，它必须传递给 napi_remove_async_cleanup_hook。

¥An opaque value returned by napi_add_async_cleanup_hook. It must be passed to napi_remove_async_cleanup_hook when the chain of asynchronous cleanup events completes.