Groovy's ArrayUtil implementation

This sample from Apache Groovy's codebase was subbed and got 34 comments about 5 or 6 years ago, see:

https://news.ycombinator.com/item?id=1951803

And the github account used in the submission says: "former home of the groovy programming language, moved to https://github.com/apache/groovy". It would have been better to sub the up-to-date code.