Callbacks: onSave, onLoad etc.

Hi,
I am wondering if there is any applicable setting/process to customize callbacks in Harmony 15. Within most software of my studio`s pipeline we have configurable scripts for publishing, checking, saving, exporting etc. that get called automatically when a user saves or loads a scene.

I haven’t been able to find any references to callbacks or similar within Harmony 15, does such a feature exist?