Adding virtual bones using Python

Quick rundown of what I want to achieve. I have different skeleton assets that I want to add virtual bones to, and want to acomplish this using Python. However the documentation about adding virtual bones is rather confusing to me. You can only add virtual bones using the AnimationLibrary class according to the documentation here:
unreal.AnimationLibrary — Unreal Python 4.27 (Experimental) documentation (
However this requires to specify a animation squence which isn’t needed when adding the virtual bones manually in the editor.
Can someone point me in the right direction?