}

  @Override
  public void invalidate(Object key) {
    throw new UnsupportedOperationException();
  }

  /**
   * @since 11.0
   */
  @Override
  // For discussion of <? extends Object>, see getAllPresent.
  public void invalidateAll(Iterable<? extends Object> keys) {
    for (Object key : keys) {
      invalidate(key);
    }
  }

  @Override
  public void invalidateAll() {

        val unrecognizedContributors = contributorsFromPullRequests.keys - contributorsInReleaseNotes.keys
        if (unrecognizedContributors.isNotEmpty()) {
            val contributorsToUpdate = contributorsInReleaseNotes + unrecognizedContributors.map { it to contributorsFromPullRequests[it]!! }
            val sortedContributors = contributorsToUpdate.entries.sortedBy { (it.value.name ?: it.key).lowercase() }

    assertEmpty(multimap().entries());
    assertEmpty(multimap().asMap());
    assertEmpty(multimap().keySet());
    assertEmpty(multimap().keys());
    assertEmpty(multimap().values());
    for (K key : sampleKeys()) {
      assertGet(key);
    }
  }

  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testClear() {
    multimap().clear();
    assertCleared();
  }

 * Null row keys, columns keys, and values are not supported.
 *
 * <p>Lookups by row key are often faster than lookups by column key, because the data is stored in
 * a {@code Map<R, Map<C, V>>}. A method call like {@code column(columnKey).get(rowKey)} still runs
 * quickly, since the row key is provided. However, {@code column(columnKey).size()} takes longer,

 * Null row keys, columns keys, and values are not supported.
 *
 * <p>Lookups by row key are often faster than lookups by column key, because the data is stored in
 * a {@code Map<R, Map<C, V>>}. A method call like {@code column(columnKey).get(rowKey)} still runs
 * quickly, since the row key is provided. However, {@code column(columnKey).size()} takes longer,

    private Map<Key, PluginDescriptor> descriptors = new ConcurrentHashMap<>(128);
    private Map<Key, Key> keys = new ConcurrentHashMap<>();

    @Override
    public void flush() {
        descriptors.clear();
    }

    @Override
    public Key createKey(Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session) {

		valid       bool
		expectedErr error
	}{
		// Valid access and secret keys with minimum length.
		{alphaNumericTable[:accessKeyMinLen], alphaNumericTable[:secretKeyMinLen], true, nil},
		// Valid access and/or secret keys are longer than minimum length.
		{alphaNumericTable[:accessKeyMinLen+1], alphaNumericTable[:secretKeyMinLen+1], true, nil},
		// Smaller access key.

    return new CacheLoader<K, V>() {
      @Override
      public V load(K key) throws Exception {
        return loader.load(key);
      }

      @Override
      public Map<K, V> loadAll(Iterable<? extends K> keys) throws Exception {
        Map<K, V> result = new HashMap<>(); // allow nulls
        for (K key : keys) {
          result.put(key, load(key));
        }
        return result;
      }
    };
  }

	DefaultKVS = config.KVS{
		config.KV{
			Key:   config.Enable,
			Value: "",
		},
		config.KV{
			Key:   ServerAddr,
			Value: "",
		},
		config.KV{
			Key:   SRVRecordName,
			Value: "",
		},
		config.KV{
			Key:   UserDNSearchBaseDN,
			Value: "",
		},
		config.KV{
			Key:   UserDNSearchFilter,
			Value: "",
		},
		config.KV{
			Key:   UserDNAttributes,
			Value: "",
		},

  @Override
  public @Nullable V put(K key, V value) {
    checkNotNull(key);
    checkNotNull(value);
    int hash = hash(key);
    return segmentFor(hash).put(key, hash, value, false);
  }

  @Override
  public @Nullable V putIfAbsent(K key, V value) {
    checkNotNull(key);
    checkNotNull(value);
    int hash = hash(key);
    return segmentFor(hash).put(key, hash, value, true);
  }