How to get enviroment variables / build parameters from groovy run on slave?

[Niksan]

Pretty much as the subject says, getting them when running as a system script is easy enough, but as there's no access to 'build' a a none system script run on a slave, how does one do that?

[Niksan]

and, slightly changing my google search terms led me to this.

https://rucialk.wordpress.com/2016/03/17/jenkins-groovy-accessing-build-parameters/

Winner!