assistive technologies

[PerditionC]

There is no documentation that I can find (or is it not visible to assistive technologies?) how accessibility with external tools is implemented? Specifically, how does a screen reader or other tool interact with a Java program ran through the CheerpJ JVM? Documentation states it implements a "full Java SE runtime", but I see no mention of how it exposes the Java Accessibility API, i.e. the equivalent to Java Access Bridge. The Accessible interface and related support seems implemented and works from Java code, but it is unclear how this is exposed to assistive technologies.