addStrings(doc, du.getSubjects(), CoreMetadataField.SUBJECT);
final Set<String> extRefs = du.getFormerExternalRefs(); final Set<DcsRelation> relations = du.getRelations(); final Set<String> subjects = du.getSubjects(); final Set<DcsDeliverableUnitRef> parents = du.getParents(); final Boolean isDigitalSurrogate = du.isDigitalSurrogate();
final Collection<String> extRefs = du.getFormerExternalRefs(); // Being deprecated, use AltIds DWD final Collection<DcsRelation> relations = du.getRelations(); final Collection<String> subjects = du.getSubjects(); final Collection<DcsDeliverableUnitRef> parents = du.getParents(); final Boolean isDigitalSurrogate = du.isDigitalSurrogate();