code: @SuppressWarnings("deprecation")
      public void export(OutputStream out, RDFFormat format)
              throws ResourceIndexException {
          try {
              TripleIterator it = _writer.findTriples(null, null, null, 0);
              it.setAliasMap(_writer.getAliasMap());
              it.toStream(out, format);
          } catch (TrippiException e) {
              throw new ResourceIndexException("Unable to export RI", e);
          }
      }
docs: {@inheritDoc}