code: @Override
      public final Iterable<FamilyDocument> findAll(final String filename) {
          final Query searchQuery =
                  new Query(Criteria.where("filename").is(filename));
          final List<FamilyDocumentMongo> familyDocumentsMongo =
                  mongoTemplate.find(searchQuery, FamilyDocumentMongo.class);
          if (familyDocumentsMongo == null) {
              return null;
          }
          final List<FamilyDocument> familyDocuments = new ArrayList<>();
          for (final FamilyDocument familyDocument : familyDocumentsMongo) {
              final Family family = (Family) toObjConverter.createGedObject(
                      null, familyDocument);
              familyDocument.setGedObject(family);
              familyDocuments.add(familyDocument);
          }
          return familyDocuments;
      }
docs: {@inheritDoc}