Providing features of "Karaf Maven Plugin"?

Someone mentioned to me that they were heavily using the “Karaf Maven Plugin” in their Maven builds. I noticed there’s nothing in the plugin portal directly supporting Karaf. I did notice Karaf Gradle Plugin, which appears to be the start of this set of functionality, but this has almost zero documentation, and doesn’t have that many features yet.

Has anyone had to implement features in their Gradle builds like the ones provided in the Karaf Maven Plugin?

The closest I have seen is the one here: https://github.com/lburgazzoli/gradle-karaf-features-plugin. But it only does the features.xml generation, not KAR or karaf assembly creation.