code: public Set<Triple> getTriplesForObject(DOReader reader)
              throws ResourceIndexException {
  
          try{
              Triple triple =
                  new SimpleTriple(new SimpleURIReference(
                                                          new URI(Constants.FEDORA.uri.concat(reader.GetObjectPID()))),
                                                          new SimpleURIReference(PREDICATE),
                                                          new SimpleLiteral("true"));
              return Collections.singleton(triple);
          }
          catch (ServerException e){
              throw new ResourceIndexException(e.getLocalizedMessage(),e);
          }
          catch (URISyntaxException e){
              throw new ResourceIndexException(e.getLocalizedMessage(),e);
          }
      }
docs: {@inheritDoc}