Embeddable collapsible sections in asciidoctor

Question

If there is a possibility to embed collapsible sections in another collapsible section in asciidoctor? I am trying to achieve something like (here Address is embedded in Customer):

I tried typing something like that (but unfortunately that doesn't work):

.first
[%collapsible]
====
First val

.second
[%collapsible]
====
Second val
====

====

Answer 1

Yes. You can nest blocks provided that the delimiter lines differ. When you use the same number of equals signs, Asciidoctor cannot tell that you are starting a new block instead of closing the first block.

Try this instead:

.first
[%collapsible]
====
First val

.second
[%collapsible]
=====
Second val
=====

====