Pavel,
> 6. I couldn't find any evidence that `resolverFields` might contain `null`. > Am I missing a javadoc or a line of code? Maybe we should talk to java.time > folks to see if it's the case? > When I ran the tests for java.time, one of them failed because `null` was being passed to `resolverFields`, so I came the conclusion that it was unsafe to make a change there. Kind regards, Jonathan