Can this be used as a general purpose tree?

[dsych]

Hey, I first learned about this plugin during @mhartington 's presentation for vimconf2021 and your idea for file tree being just a library intrigued me. I skimmed through the docs and a though struck me:

Can this be used as a general purpose tree widget?

In other words, is there any kind of interface that could be used (or exposed easily) for user to supply a content provider? Maybe a list of lists or whatever. The main idea being that yanil already provides most of the functionality for implementing a functional tree widget with traversal, hooks and keymaps, while user would just supply the data and missing mappings for whatever.
An example would be a call stack widget.