@Override
    public void fromData(DataInput in,
        DeserializationContext context) throws IOException, ClassNotFoundException {
      super.fromData(in, context);
      replyCode = in.readByte();
      heldLocks = (DLockRemoteToken[]) DataSerializer.readObjectArray(in);
    }
Identifies who the responder believes the lock grantor currently is
geode-core/src/main/java/org/apache/geode/distributed/internal/locks/DLockRecoverGrantorProcessor.java