@Override
  public boolean processEvents(List<AsyncEvent> events) {
    for (AsyncEvent event : events) {
      eventsMap.put(event.getKey(), event);
    }
    return true;
  }
Returns true if the test should create off-heap regions. OffHeap tests should over-ride this
method and return false.
geode-dunit/src/main/java/org/apache/geode/internal/cache/wan/AsyncEventQueueTestBase.java