What I actually try to do, is to write an

UnhygienicAstDetector

. So basically the idea was to walk each and every node, and if

if (node.putNodeMetaData(UnhygienicAstDetector.class, _TRUE_) == _TRUE_)

is

true

then throw an error, to make sure there are no things like GROOVY-12313 or GROOVY-12441 left or come in by later changes.