Justin Horvitz

Add a parallel `forEach()` method in `NonBlockingHashMap`

2

## Feature Request Add a method to `NonBlockingHashMap` similar to the [parallel `forEach` method](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/concurrent/ConcurrentHashMap.html#forEach(long,java.util.function.BiConsumer)) in `ConcurrentHashMap`. ## Background In [Bazel](https://github.com/bazelbuild/bazel) we currently use Guava's interners, but we are looking at...