How to dispatch events when a model is attached / detached

[Hannoma]

I tried to create a custom BelongsToMany relationship that dispatches events when the sync, attach or detach method is called. My relationship does not use pivot models. It seems though that Nova does not call the attach or detach methods. Is there a way to dispatch events only using the relationship? Or should I create a pivot model and listen for model events for that pivot model?