How can I identify used vs unused *prototype* variables?

I built a prototype last week, and now coming back to it with fresh eyes I’ve forgotten everything I did 🤣 woopsy!

I made a handful of local variables, and I’m not sure which ones I wound up using and which ones I can safely delete.

I found out how to identify variable tokens used in the design, like colors, but I can’t find a similar process for identifying variables used in prototyping.

Is there a plugin or maybe a native feature I’m missing?

Thanks in advance!