@Override
  public void orderedDeserialize(Object obj, AutoClassInfo ci) {
    pdxReader.orderedDeserialize(obj, ci);
    for (PdxFieldWrapper f : ci.getFields()) {
      readFields.add(f.getName());
    }
  }
Returns the indexes of the fields not read during deserialization.

@return the indexes of the unread fields
geode-core/src/main/java/org/apache/geode/pdx/internal/TrackingPdxReaderImpl.java