Sub folders recursive for custom actions

Hi,

it's more a "new feature" than an issue.

I'm new to gitlab.xfce and didn't know, where to address my question.

I'd like to add sub folders for the custom action context menu. I tried to find the fitting file, found 'thunar-action-manager.c' to read the sources. But didn't found the parser for the uca.xml. Where can I add support to sub folder/sub menu for custom actions menu?

Greetings rundekugel