code: @Override
      public final SubmitterDocument findByRootAndString(
              final RootDocument rootDocument, final String string) {
          final SubmitterDocument submitterDocument =
                  findByFileAndString(rootDocument.getFilename(), string);
          if (submitterDocument == null) {
              return null;
          }
          final Submitter submitter = submitterDocument.getGedObject();
          submitter.setParent(rootDocument.getGedObject());
          return submitterDocument;
      }
docs: {@inheritDoc}