code: @Nullable
    public ObjectRes getMeta(@NotNull final String hash) throws IOException {
      return doWork(auth -> doRequest(auth, new MetaGet(), AuthHelper.join(auth.getHref(), PATH_OBJECTS + "/" + hash)), Operation.Download);
    }
docs: Get metadata for object by hash.
  
  @param hash Object hash.
  @return Object metadata or null, if object not found.
  @throws IOException