SubQuestionQueryEngine: is there any way

In our SEC-Insights app, we used a custom callback handler to grab the sub-questions/answers and send them to the frontend when they appeared

it's applied on the openaiagent from what I see

I tried to add it but I get: SubQuestionQueryEngine.from_defaults() got an unexpected keyword argument 'callback_manager'
Tried to add it to the indexes fed as tools, no trace

oh my bad, it works if I add it to the global service context

which is deprecated now haha

but where would I intercept those event to stream them then?

I believe how SEC-Insights did it was just send a server-side event to the frontend with the subquestion info, all inside the custom callback

I might be wrong, I haven't looked in a bit