private void awaitFuture(AtomicReference<Future<Void>> voidFuture)
      throws InterruptedException, ExecutionException, TimeoutException {
    await().until(() -> voidFuture.get() != null);
    awaitFuture(voidFuture.get());
  }
Regression test for TRAC #41770: ConcurrentRegionOperationsJUnitTest fails with duplicate
create in an oplog
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/DiskRegionJUnitTest.java