public Map<String, String> getEnvInfo() {
        return getWithReadTxn(txn -> {
            final Map<String, String> statMap = convertStatToMap(env.stat());
            final Map<String, String> envInfo = convertEnvInfoToMap(env.info());

            final String dbNames = String.join(",", getDbiNames());

            return ImmutableMap.<String, String>builder()
                    .putAll(statMap)
                    .putAll(envInfo)
                    .put("maxKeySize", Integer.toString(env.getMaxKeySize()))
                    .put("dbNames", dbNames)
                    .build();
        });
    }
Deletes {@link LmdbEnv} from the filesystem if it is already closed.
stroom-lmdb/src/main/java/stroom/lmdb/LmdbEnv.java