(note: follow-up from #1851)

Currently @JsonFormat features, and specifically Feature.ACCEPT_CASE_INSENSITIVE_PROPERTIES, does not apply if annotated via class. Like:

    @JsonFormat(with={ JsonFormat.Feature.ACCEPT_CASE_INSENSITIVE_PROPERTIES })
    static class Role {
        public String ID;
        public String Name;
    }

whereas similar setting with mapper.configOverrides(class) does work.

It would probably make sense to allow annotation on class too, having lower precedence than config override, but higher than general one.