Explore accessibility structure using NSAccessibility

Hello all, I have an application which explores accessibility structure. It is something similar to what Accessibility Inspector does. I have developed it using the old API. Using functions like AXUIElementCreateApplication or AXUIElementCopyAttributeValue and having to deal with pointers manually. Would it be possible to rewrite that code using NSAccessibility? I have read some doc about it but it seems it is designed to set accessibility in your OWN application, not for retrieving accessibility from external application.