Github user MikeThomsen commented on the issue:
It's whack-a-mole. To see many/all of them at once do this from the source
`mvn clean install -Pcontrib-check :nifi-gcp-processors`
(I didn't look closely. I'm assuming `nifi-gcp-processors` was the maven
module that was failing. It needs to be the failing maven module's maven name +
`:` at the start to tell Maven to only build that one module w/ the full
Then you just keep changing until you make stylecheck happy.