## Feature description Introduce `DataStream.empty()` method similar to [v4](https://github.com/scramjetorg/scramjet/blob/237c5bc793d9d7639af53512da632396f3fa8785/docs/data-stream.md#module_scramjet.DataStream+empty): > Called only before the stream ends without passing any items. --- **If you are interested in this issue or this type of transforms fits your use case, please upvote with :+1:**.
