newFirst = segment.removeEntryFromChain(entryThree, entryOne);
    assertThat(newFirst.getKey()).isSameInstanceAs(keyTwo);
    assertThat(newFirst.getValueReference().get()).isSameInstanceAs(valueTwo);
    assertThat(newFirst.getHash()).isEqualTo(hashTwo);
    newFirst = newFirst.getNext();
    assertThat(newFirst.getKey()).isSameInstanceAs(keyThree);
    assertThat(newFirst.getValueReference().get()).isSameInstanceAs(valueThree);

    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());
  }

          }

          @Override
          public K next() {
            Entry<K, V> entry = entryIterator.next(); // store local reference for thread-safety
            cacheEntry = entry;
            return entry.getKey();
          }
        };
      }

      @Override
      public int size() {
        return backingMap.size();
      }

      @Override
      public boolean contains(@Nullable Object key) {

  public void testPutDuplicateValue() {
    List<Entry<K, V>> entries = copyToList(multimap().entries());

    for (Entry<K, V> entry : entries) {
      resetContainer();

      K k = entry.getKey();
      V v = entry.getValue();

      List<V> values = multimap().get(k);
      List<V> expectedValues = copyToList(values);

      assertTrue(multimap().put(k, v));
      expectedValues.add(v);

                final CrawlingInfoParam crawlingInfoParam = new CrawlingInfoParam();
                crawlingInfoParam.setCrawlingInfoId(crawlingInfo.getId());
                crawlingInfoParam.setKey(entry.getKey());
                crawlingInfoParam.setValue(entry.getValue());
                crawlingInfoParamList.add(crawlingInfoParam);
            }
            getCrawlingInfoService().storeInfo(crawlingInfoParamList);

            if (fieldConfigs.getConfig(e.getKey()).map(FieldConfigs.Config::isOverwrite).orElse(false)
                    && e.getValue() instanceof final Object[] values && values.length > 0) {
                newDataMap.put(e.getKey(), values[values.length - 1]);
            } else {
                newDataMap.put(e.getKey(), e.getValue());
            }
        }
        return newDataMap;
    }

    public String getRemoteFilename() {
        return "maven-metadata.xml";
    }

    @Override
    public String getLocalFilename(ArtifactRepository repository) {
        return "maven-metadata-" + repository.getKey() + ".xml";
    }

    @Override
    public void storeInLocalRepository(ArtifactRepository localRepository, ArtifactRepository remoteRepository)
            throws RepositoryMetadataStoreException {
        try {

                buf.append('{');
                boolean first2 = true;
                for (final Map.Entry<String, Object> entry : doc.entrySet()) {
                    final String name = entry.getKey();
                    if (StringUtil.isNotBlank(name) && entry.getValue() != null) {
                        if (!first2) {
                            buf.append(',');
                        } else {

                System.getProperties().entrySet().stream().forEach(e -> logger.debug("Property: {}={}", e.getKey(), e.getValue()));
                System.getenv().entrySet().forEach(e -> logger.debug("Env: {}={}", e.getKey(), e.getValue()));
                logger.debug("Options: options={}", options);
            } catch (final Exception e) {
                // ignore
            }

    }
  }

  @Override
  final Iterator<E> elementIterator() {
    return new Itr<E>() {
      @Override
      @ParametricNullness
      E result(int entryIndex) {
        return backingMap.getKey(entryIndex);
      }
    };
  }

  @Override
  final Iterator<Entry<E>> entryIterator() {
    return new Itr<Entry<E>>() {
      @Override
      Entry<E> result(int entryIndex) {