This is a bugfix release for the 16.0 version: Checkout the full 16.0 release notes
graphql-java shades in the Google immutable collections.
However we missed a package that was required and #2107 was the result.
This has been fixed in this 16.1 release.
Additionally it contains two other PRs:
#2113 Introspection for repeatable directive
#2111 Fixes module name