How to enable batch processing of event hub triggers on python v2 azure functions?

Question

The documentation mentions nothing about this for python v2. And only a single line about "cardinality" for v1.

https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-event-hubs-trigger?tabs=python-v2%2Cisolated-process%2Cnodejs-v4%2Cfunctionsv2%2Cextensionv5&pivots=programming-language-python

Additionally, if I set up my host.json using the suggested options for the v5.x+ extension I get an error when writing my function in Visual Code saying those arguments are not allowed:

https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-event-hubs?tabs=isolated-process%2Cextensionv5&pivots=programming-language-python#install-bundle