@Override
  public List<AsyncEvent<?, ?>> take(int batchSize) throws CacheException {
    // This method has no callers.
    // If we do want to support it then the callers
    // need to call freeOffHeapResources on each returned GatewaySenderEventImpl
    throw new UnsupportedOperationException();
  }
Whether the <code>Gateway</code> queue should be no-ack instead of ack.
geode-core/src/main/java/org/apache/geode/internal/cache/wan/serial/SerialGatewaySenderQueue.java