BioPAX Validator v6.0.0 (using Paxtools v6.0.0 and using Bioregistry.io based Resolver instead of Miriam/Identifiers.org to validate/normalize xrfers and URIs, etc.)
It buids and runs with JDK-20 or 21 (e.g. Temurin-21).
Full Changelog: v5.1.0...v6.0.0