Doc's re writing db framework extensions

Are there any doc’s for writing an extension to avram (or an extension to crystal-db)? (In particular, I want to write a nested set extension.)

At the moment, there’s no docs on extending Avram. When you say nested set, do you mean like a way to do the Rails version of accepts_nested_attributes_for?

Yes, like

class Category < ActiveRecord::Base

… from GitHub - collectiveidea/awesome_nested_set: An awesome replacement for acts_as_nested_set and better_nested_set.

… and associated unit tests