public JsonEnumerator(File file) {

    try {

      final ObjectMapper mapper = new ObjectMapper();

      mapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);

      mapper.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);

      mapper.configure(JsonParser.Feature.ALLOW_COMMENTS, true);

      List<Object> list = mapper.readValue(file, List.class);

      enumerator = Linq4j.enumerator(list);

    } catch (IOException e) {

      throw new RuntimeException(e);

    }

  }