code: @Override
      public final void visit(final WifeDocumentMongo document) {
          final WifeDocumentMongo wifeDocument = (WifeDocumentMongo) document;
          final Wife wife = new Wife(getParent(), "Wife",
                  new ObjectId(wifeDocument.getString()));
          wife.setFromString(getParent().getString());
          setGedObject(wife);
      }
docs: {@inheritDoc}