docs: public String getPublicIdentifier() throws DocumentStoreException {
          Misc.checkState(this.isOpen(), "Database is closed");
          try {
              return get(queue.submit(new GetPublicIdentifierCallable()));
          } catch (ExecutionException e) {
              logger.log(Level.SEVERE, "Failed to get public ID", e);
              throw new DocumentStoreException("Failed to get public ID", e);
          }
      }