SVGDOMImplementation vs. 1.8?

Batik 1.8 seems to have removed the 
org.apache.batik.dom.svg.SVGDOMImplementation class, whereas this class 
is present in 1.7.

Yet the Batik site itself provides examples using this class.

So what's the story here?

I ask as I am trying to move to Batik 1.8, but we have a class which is 
using SVGDOMImplementation (for its SVG_NAMESPACE_URI constant and its 
getDOMImplementation() method) and thus cannot currently move to 1.8.

I am mystified as to how I am supposed to be able to move to 1.8 -- and 
why this API change is not clearly noted in the release notes.

--
Jess Holle