code: @Override
      public final Iterable<NoteDocument> findAll(final String filename) {
          final Query searchQuery =
                  new Query(Criteria.where("filename").is(filename));
          final List<NoteDocumentMongo> noteDocumentsMongo =
                  mongoTemplate.find(searchQuery, NoteDocumentMongo.class);
          if (noteDocumentsMongo == null) {
              return null;
          }
          final List<NoteDocument> noteDocuments = new ArrayList<>();
          for (final NoteDocument noteDocument : noteDocumentsMongo) {
              final Note note = (Note) toObjConverter.createGedObject(
                      null, noteDocument);
              noteDocument.setGedObject(note);
              noteDocuments.add(noteDocument);
          }
          return noteDocuments;
      }
docs: {@inheritDoc}