assertEquals("woot", Iterators.tryFind(iterator, Predicates.alwaysFalse()).or("woot"));
    assertFalse(iterator.hasNext());
  }

  public void testTryFind_alwaysFalse_isPresent() {
    Iterable<String> list = Lists.newArrayList("cool", "pants");
    Iterator<String> iterator = list.iterator();
    assertThat(Iterators.tryFind(iterator, Predicates.alwaysFalse())).isAbsent();

    assertEquals("woot", Iterators.tryFind(iterator, Predicates.alwaysFalse()).or("woot"));
    assertFalse(iterator.hasNext());
  }

  public void testTryFind_alwaysFalse_isPresent() {
    Iterable<String> list = Lists.newArrayList("cool", "pants");
    Iterator<String> iterator = list.iterator();
    assertThat(Iterators.tryFind(iterator, Predicates.alwaysFalse())).isAbsent();

                .ifPresent(s -> entry.put(new BasicAttribute(fessConfig.getLdapAttrSurname(), s)));
        OptionalUtil.ofNullable(user.getGivenName()).filter(StringUtil::isNotBlank)
                .ifPresent(s -> entry.put(new BasicAttribute(fessConfig.getLdapAttrGivenName(), s)));
        OptionalUtil.ofNullable(user.getMail()).filter(StringUtil::isNotBlank)

        return search(index, condition, (searchRequestBuilder, execTime, searchResponse) -> {
            final List<T> list = new ArrayList<>();
            searchResponse.ifPresent(response -> response.getHits().forEach(hit -> {
                list.add(creator.build(response, hit));
            }));
            return list;
        });
    }

            }

            searchHelper.getDocumentByDocId(docId, new String[] { fessConfig.getIndexFieldUrl(), fessConfig.getIndexFieldLang() },
                    OptionalThing.empty()).ifPresent(doc -> {
                        final String favoriteUrl = DocumentUtil.getValue(doc, fessConfig.getIndexFieldUrl(), String.class);
                        final String userCode = userInfoHelper.getUserCode();