code: @Override
      public final Iterable<NoteDocument> findAll(
              final RootDocument rootDocument) {
          final Iterable<NoteDocument> noteDocuments =
                  findAll(rootDocument.getFilename());
          if (noteDocuments == null) {
              return null;
          }
          for (final NoteDocument noteDocument : noteDocuments) {
              final Note note = noteDocument.getGedObject();
              note.setParent(rootDocument.getGedObject());
          }
          return noteDocuments;
      }
docs: {@inheritDoc}