We do have several modules with a json package that contains a shaded version of the basic JSON library: spring-boot-cli, spring-boot-configuration-processor, and spring-boot-configuration-metadata.
The Nullmarked check has been disabled as we can 't configure it to ignore those packages. Perhaps this could be generalized so that no check applies to those packages.
Comment From: builtDifferentCoder
can you please assign this task to me