@Override
 public void readFrom(StreamInput in) throws IOException {
   super.readFrom(in);
   stateInformation = in.readOptionalString();
 }
 @Override
 public void readFrom(StreamInput in) throws IOException {
   super.readFrom(in);
   spaceFound = in.readBoolean();
   reindexedSpaces = in.readOptionalString();
 }