}
            return new Pair<>(key, value);
        }).collect(Collectors.toMap(Pair::getFirst, Pair::getSecond));
    }

    default Map<String, Object> convertToStorableDoc(final Map<String, Object> source) {

        final Set<String> arrayFieldSet = getIndexAdminArrayFieldSet();
        final Set<String> dateFieldSet = getIndexAdminDateFieldSet();