pyglet: AttributeError: 'Batch' object has no attribute 'add'

I assume I do sth wrong, but I don’t really know what. This is from an old project of mine, and it used arcade and pyglet, and now I was just trying it out, and I got AttributeError: 'Batch' object has no attribute 'add' while trying to call batch.add, where batch is a class of instance Batch.

I have pyglet 2.0.dev23 installed.

When looking at the code of Batch, I also don’t see any such method add. Although the documentation says there should be such a method.

When searching for this error, I did not find anything.