Clojurians Log v2

What's like, the inverse of instance ? instance gets me the javafx object given a map (I think?) -- I have a JavaFX Node (specifically a Group), how do i put it in my cljfx node tree?

(I got it from a 3rd party java project for importing meshes)

https://github.com/cljfx/cljfx#included-extension-lifecycles

ext-instance-factory with (constantly my-node)