public void reset() {
    resetRecipients();
    sender = null;
  }
This method resets the state of this message, usually releasing objects and resources it was
using. It is invoked after the message has been sent. Note that classes that override this
method should always invoke the inherited method (<code>super.reset()</code>).
geode-core/src/main/java/org/apache/geode/distributed/internal/DistributionMessage.java