Use java.util.List.of for creation of unmodifiable lists

[wilkinsona]

[mbhave]

Placing this on-hold because we've decided to approach this on a case-by-case basis for new usages. There are subtle differences between List.of() and the equivalent Collections method such as contains(null) throwing an NPE which aren't suitable for a blanket search and replace.

[Abhishekverma2002]

Would love to contribute in java and algos. If you have any such set of work ,consider me in.

[philwebb]

I think we can close this one and adapt to List.of in new code or when we touch existing classes. Doing an entire sweep at this point doesn't seem worth it.