ExecutorService.awaitTermination and virtual threads

[Kasper Nielsen]

> Once there are a few more pieces in place then it should be possible to
> do the following with the prototype:
>
>          try (ExecutorService scheduler = Executors.newFixedThreadPool(1)) {
>              ThreadFactory factory = Thread.builder()
>                      .virtual()
>                      .scheduler(scheduler)
>                      .name("virtual-thread-", 1)
>                      .factory();
>                  });
>              }
>          }
>
Would it make sense to have this instead

ThreadFactory.virtual()
ThreadFactory.virtual(Executor scheduler)

I do think .virtual(scheduler) reads a bit clearer than
.virtual().scheduler(scheduler)
And you effectively convey that you can only schedule virtual threads.
If you at some point add new thread types that need a scheduler you
can always use the same trick.

/Kasper