In a large internal project we still make heavy use of Groovy for scripting. All scripting languages besides the new Painless language were deprecated in version 5, and now in version 6 they are removed. This hampers us in our migration efforts from 5 to 6. Does anyone know if it is still possible to use Groovy through a separate (third party) plugin? I played around a bit with Painless, but can't say that I really like it. Documentation was/is kind of poor, and it seemed to me it somewhat assumed familiarity with Java and it's framework/APIs.