StringWriter sw = new StringWriter();
        properties.save(sw);
        String msg = sw.toString();
        assertTrue(sw.toString().endsWith(RESULT3), msg);
        List<String> rawValue = properties.getRaw(KEY1);
        assertEquals(2, (Object) rawValue.size());
        assertEquals(KEY1A + " = " + VALUE1, rawValue.get(0));
        assertEquals(VALUE1, rawValue.get(1));
    }

    @Test

    Iterator<Entry<K, V>> iterator = multimap().entries().iterator();
    Entry<K, V> entry = iterator.next();
    K key = entry.getKey();
    V value = entry.getValue();
    multimap().removeAll(key);
    assertEquals(key, entry.getKey());
    assertEquals(value, entry.getValue());
  }

        valueMap.put("user", user.map(FessUserBean::getUserId).orElse("-"));
        final Comparator<Map.Entry<String, String>> c = Comparator.comparing(Map.Entry::getKey);
        params.entrySet().stream().sorted(c).forEach(e -> {
            valueMap.put(e.getKey(), e.getValue().replace('\t', '_'));
        });
        log(valueMap);
    }

    /**
     * Log the value map.
     * @param valueMap The value map.

    assertThrows(
        IllegalArgumentException.class,
        () -> Stream.of(mapEntry("one", 1), mapEntry("one", 11)).collect(collector));
  }

  public void testToImmutableSortedMapMerging() {
    Collector<Entry<String, Integer>, ?, ImmutableSortedMap<String, Integer>> collector =
        toImmutableSortedMap(Entry::getKey, Entry::getValue, Integer::sum);

        json.append("{\n");

        boolean first = true;
        for (final Map.Entry<String, Object> entry : source.entrySet()) {
            final String field = entry.getKey();
            if (excludeFields.contains(field)) {
                continue;
            }

            final Object value = entry.getValue();
            if (value == null) {
                continue;

            Metadata metadata = it.next();
            if (metadata instanceof VersionsMetadata versionsMetadata) {
                it.remove();
                processedVersions.put(versionsMetadata.getKey(), versionsMetadata);
            }
        }
    }

    @Override
    public Collection<? extends Metadata> prepare(Collection<? extends Artifact> artifacts) {
        return Collections.emptyList();
    }

    assertThat(map.containsKey(refreshKey)).isFalse();

    // let computation complete
    letGetFinishSignal.countDown();
    getFinishedSignal.await();
    checkNothingLogged();

    // results should be visible
    assertThat(cache.size()).isEqualTo(2);
    assertThat(map.get(getKey)).isEqualTo(getKey + suffix);
    assertThat(map.get(refreshKey)).isEqualTo(refreshKey + suffix);

            for (Entry<Range<Integer>, Integer> entry : rangeMap.asMapOfRanges().entrySet()) {
              if (entry.getKey().isConnected(subRange)
                  && !entry.getKey().intersection(subRange).isEmpty()) {
                expectedBuilder.put(entry.getKey().intersection(subRange), entry.getValue());
              }
            }

    Entry<String, Collection<Integer>> entry = iterator.next();
    assertThat(entry.getKey()).isNull();
    assertThat(entry.getValue()).containsExactly(7, 3, 1);
    entry = iterator.next();
    assertThat(entry.getKey()).isEqualTo("tree");
    assertThat(entry.getValue()).containsExactly(null, 0);
    entry = iterator.next();
    assertThat(entry.getKey()).isEqualTo("google");
    assertThat(entry.getValue()).containsExactly(6, 2);
  }

          reverse(samples.e3()),
          reverse(samples.e4()));
    }

    private Entry<V, K> reverse(Entry<K, V> entry) {
      checkNotNull(entry);
      return mapEntry(entry.getValue(), entry.getKey());
    }

    @SuppressWarnings("unchecked")
    @Override
    public BiMap<V, K> create(Object... elements) {
      Entry<?, ?>[] entries = new Entry<?, ?>[elements.length];