Looking for docbook plugin

We need to build our docs with docbook. Where can I find a/the Gradle docbook plugin for this?

I found various implementations on the web. Which one is suggested to be used?

I thought it had been part of the Gradle distro at one point…

One option is the jdocbook plugin: http://wiki.gradle.org/display/GRADLE/Plugins#Plugins-jDocbookPlugin

At some point we want to merge this plugin with the stuff in Gradle’s build to create an ‘official’ documentation plugin.