public static IdentityUpdateResponse send(Set recipients, InternalDistributedSystem is,
      int currentPRId) {
    Assert.assertTrue(recipients != null, "IdentityUpdateMessage NULL recipients set");
    IdentityRequestMessage.setLatestId(currentPRId); // set local value
    IdentityUpdateResponse p = new IdentityUpdateResponse(is, recipients);
    IdentityUpdateMessage m =
        new IdentityUpdateMessage(recipients, p.getProcessorId(), currentPRId);
    is.getDistributionManager().putOutgoing(m); // set remote values
    return p;
  }
Empty constructor to support DataSerializable instantiation
geode-core/src/main/java/org/apache/geode/internal/cache/partitioned/IdentityUpdateMessage.java