*     for each invocation of the wrapped callable.
   */
  @J2ktIncompatible
  @GwtIncompatible // threads
  static <T extends @Nullable Object> Callable<T> threadRenaming(
      Callable<T> callable, Supplier<String> nameSupplier) {
    checkNotNull(nameSupplier);
    checkNotNull(callable);
    return () -> {
      Thread currentThread = Thread.currentThread();

    Callable<@Nullable Void> callable =
        () -> {
          assertThat(Thread.currentThread().getName()).isEqualTo(newName.get());
          return null;
        };
    Callables.threadRenaming(callable, newName).call();
    assertThat(Thread.currentThread().getName()).isEqualTo(oldName);
  }

  @J2ktIncompatible
  @GwtIncompatible // threads

    Callable<@Nullable Void> callable =
        () -> {
          assertThat(Thread.currentThread().getName()).isEqualTo(newName.get());
          return null;
        };
    Callables.threadRenaming(callable, newName).call();
    assertThat(Thread.currentThread().getName()).isEqualTo(oldName);
  }

  @J2ktIncompatible
  @GwtIncompatible // threads