Wish Link to tutorial for custom build action

After minutes of searching, I finally found the tutorial but it is for B4A.
https://www.b4x.com/android/forum/threads/modules-attributes.24721/

The only tutorial I can find for B4J is created by @tchart
https://www.b4x.com/android/forum/threads/using-custombuildaction-to-your-advantage.72945/

I wish a link for the tutorial is added inside the pop up message showed below:

I have found the custom build action function very useful/powerful and have used it to great effect in my projects, however I too find it frustrating that there is no single reference (tutorial) listing all available methods, parameters, syntax, etc. and you have to aggregate various nuggets of information resulting from multiple searches.

This post CustomBuildAction Types and this post What are the #CustomBuildAction Steps supported by B4J? are indicative of such a need and don't believe the topic is covered in any of the Guides. If I had the knowledge I’d happily contribute to a tutorial, but I don’t feel competent to do so.

Another interesting use of the custom build action function b4x_cba (B4X Custom Build Action).