Activity: Recursive Embedding

[Kattya Cuevas Montes]

Hi, I'm using streama for a discussions system in a project.

Every question(new discussion) is a activity, and I need implement replies for the questions. When I used only mongoid, I was using recursively_embeds_many, but in activity not include Mongoid::Document and not work this method. I'd like to know how to embed recursively activity with streama?