@Override
  public void toData(DataOutput out,
      SerializationContext context) throws IOException {
    // context.getSerializer().writeObject(this.recipients, out); // no need to serialize; filled in
    // later
    // ((IpAddress)this.sender).toData(out); // no need to serialize; filled in later
    // out.writeLong(this.timeStamp);
  }
Writes the contents of this <code>DistributionMessage</code> to the given output. Note that
classes that override this method should always invoke the inherited method
(<code>super.toData()</code>).
geode-core/src/main/java/org/apache/geode/distributed/internal/DistributionMessage.java