Version 4.3.0 is available upstream. Please consider updating! It seems that version 4.3.0 is available upstream, while the latest version in the Gentoo tree is 4.2.2. You think this warning is false? Read more about it here.
stax2 API is an extension to basic Stax 1.0 API that adds significant new functionality, such as full-featured bi-direction validation interface and high-performance Typed Access API.