@Override
  public int getProcessorType() {
    return OperationExecutors.STANDARD_EXECUTOR;
  }
A PooledDistributionMessage passes processing off to a thread that executes on the
DistributionManager's getThreadPool(). This is sufficient for messages that don't need to be
processed serially with respect to any other message.
geode-core/src/main/java/org/apache/geode/distributed/internal/PooledDistributionMessage.java