@Override
  @VisibleForTesting
  public Set<AsyncEventQueue> getAsyncEventQueues(boolean visibleOnly) {
    return visibleOnly ? allVisibleAsyncEventQueues : allAsyncEventQueues;
  }
For use by unit tests to inject a mocked ccpTimer
geode-core/src/main/java/org/apache/geode/internal/cache/GemFireCacheImpl.java