### Question:
IstexIdsReader { public void load(String input, Consumer<IstexData> closure) { try (Stream<String> stream = Files.lines(Paths.get(input))) { stream.forEach(line -> closure.accept(fromJson(line))); } catch (IOException e) { LOGGER.error("Some serious error when processing the input Istex ID file.", e); } }  void load(String input, Consumer<IstexData> closure); void load(InputStream input, Consumer<IstexData> closure); IstexData fromJson(String inputLine);  }### Answer:
@Test public void test3() throws Exception { target.load( new GZIPInputStream(this.getClass().getResourceAsStream("/sample-istex-ids.json.gz")), unpaidWallMetadata -> System.out.println(unpaidWallMetadata.getDoi() )); }