private Optional<String> deleteDuplicateStore(final String uuid) {
        try {
            final LmdbEnvDir lmdbEnvDir = getDir(uuid);
            lmdbEnvDir.delete();
            LOGGER.info("Deleted redundant duplicate check store with UUID: {}, path: {}",
                    uuid, LogUtil.path(lmdbEnvDir.getEnvDir()));
            return Optional.of(uuid);
        } catch (final RuntimeException e) {
            LOGGER.error(() -> LogUtil.message(
                    "Error deleting duplicateStore with UUID {}: {}",
                    uuid, LogUtil.exceptionMessage(e), e));
            return Optional.empty();
        }
    }
Get a list of duplicate checking store UUID names that currently exist.

@return A list of duplicate checking store UUID names that currently exist.
stroom-analytics/stroom-analytics-impl/src/main/java/stroom/analytics/impl/DuplicateCheckDirs.java