Interesting project! As a Scala developer, I am always curious when I see a project that's mostly Java with a dash of Scala. Seems like a one meta-pattern these

Interesting project! As a Scala developer, I am always curious when I see a project that's mostly Java with a dash of Scala. Seems like a one meta-pattern these days is to use Scala to create a DSL around a Java project. I'd just go full Scala myself :D but it's nice to see Scala co-mingling happily with Java in a large, important, useful OSS project.