Accessibility access to visual annotation markers outside of Glyph Gutter

All,

I'm working on adding some new Accessibility features into NetBeans, namely
to increase accessibility with Git Support and Code folding for the Quorum
4.0 release. In the past, when I've wanted to access visual aspects of the
editor, I do things like this:

BaseDocument document = (BaseDocument) text.getDocument();
Annotations docAnnotations = document.getAnnotations();

Once I have the annotations, it tells me things like whether there is a
little lightbulb in the corner, compiler errors, or things like that.
That's useful for making editor hints, errors, and a bunch of other things
accessible. However, for GIT support and code folding, for which the visual
elements are not in the glyph gutter, I'm guessing these aren't stored as
annotations.

Is there a way to get which visual markers are active on the line for
Version control and code folding information? I've been digging through the
docs, but have come up dry.

Stefik

P.S. The reason I ask is because blind students across the U.S. are
starting to form robotics teams and we're having them use GIT, as it's
mostly accessible. Thus, I'm trying to get it accessible inside of NetBeans.