Thanks for the PR! I changed the variable name since other properties didn't include a prefix. I'm not sure if that was the best choice to have made (I think that dates back to the original GMaven days), but thought it was better to be consistent. I also added a couple additional properties I thought might be useful.

Thanks.
Regarding properties names I added prefix in case of any possible conflict in other plugins. I think the same reason was in case of exec-maven-plugin for java, eg.:
https://github.com/mojohaus/exec-maven-plugin/blob/master/src/main/java/org/codehaus/mojo/exec/ExecJavaMojo.java#L76

But yes - shorter version is nice to use and consistent with parameter name.

I had the same thought about collisions, but wasn't seeing prefixes in official Maven plugins. It appears they don't make any specific recommendations about that.

What I meant by consistency was with the other parameter properties that already exist. I'd like them to be all prefixed, or none of them.