Help generating custom Docbkx Maven Plugin?

I'd like instructions for how to build a custom Docbkx maven plugin. On 
http://docbkx-tools.sourceforge.net/builder.html, the instructions seem to be:

Put a copy of docbook-xsl-[version].zip to the lib directory of your distribution

Configure the plugin with the version number of the Docbook XSL distribution 

Configure a package name for the generated sources 

Add some meta data for every type of output document you aim to generate using your plugin

If you want to know more, carefully study the sources of the Maven Docbkx Plugin itself

Does anyone have experience with this to fill in the gaps of my understanding? I am keen to get this working. Once I figure it out, I will contribute documentation back to the project so everyone can benefit.

Robert