@Override
    public void toData(DataOutput out,
        SerializationContext context) throws IOException {
      super.toData(out, context);
      DataSerializer.writeObject(grantor, out);
      out.writeLong(elderVersionId);
      out.writeInt(grantorSerialNumber);
      out.writeBoolean(needsRecovery);
    }
@return true if the message was sent
geode-core/src/main/java/org/apache/geode/distributed/internal/locks/GrantorRequestProcessor.java