Accessibility action for developers

[Ócsvári Áron]

Hello,

I'm developing an android app, and I'd like to add custom action for a
specific item. I didn't find any official documentation about that. I
tried this example, but it does not work for me (in local context menu
does not appear my custom action):
https://www.last-child.com/android-a11y-missing-manual/
(AccessibilityAction section)

Is there any working example for that?
Thanks for your help!
Regards,
Aron