*
   * Use this for EXPLICIT tag types:
   *
   * ```
   * [5] EXPLICIT UTF8String
   * ```
   *
   * @param forceConstructed non-null to set the constructed bit to the specified value, even if the
   *     writing process sets something else. This is used to encode SEQUENCES in values that are
   *     declared to have non-constructed values, like OCTET STRING values.
   */

  fun optional(defaultValue: T? = null): BasicDerAdapter<T> = copy(isOptional = true, defaultValue = defaultValue)

  /**
   * Returns a copy of this adapter that sets the encoded or decoded value as the type hint for the
   * other adapters on this SEQUENCE to interrogate.
   */
  fun asTypeHint(): BasicDerAdapter<T> = copy(typeHint = true)

    checkState(keyEquivalence == null, "key equivalence was already set to %s", keyEquivalence);
    keyEquivalence = checkNotNull(equivalence);
    this.useCustomMap = true;
    return this;
  }

  Equivalence<Object> getKeyEquivalence() {
    return MoreObjects.firstNonNull(keyEquivalence, getKeyStrength().defaultEquivalence());
  }

  /**

    protected FessConfig fessConfig;

    /** The set of field names for content. */
    protected final Set<String> contentFieldNameSet = new HashSet<>();

    /** The set of field names for tags. */
    protected final Set<String> tagFieldNameSet = new HashSet<>();

    /** The set of field names for roles. */
    protected final Set<String> roleFieldNameSet = new HashSet<>();

	bucketCh := make(chan BucketInfo, len(buckets))

	// Shuffle buckets to ensure total randomness of buckets, being scanned.
	// Otherwise same set of buckets get scanned across erasure sets always.
	// at any given point in time. This allows different buckets to be scanned
	// in different order per erasure set, this wider spread is needed when
	// there are lots of buckets with different order of objects in them.

    static Stream<String> messages() {
        return Stream.of("custom message", "", " ", "αβγ", "x".repeat(1000), null);
    }

    @Test
    @DisplayName("Default constructor sets the expected message and no cause")
    void defaultConstructor_setsExpectedMessage_andNoCause() {
        // Arrange & Act
        SmbUnsupportedOperationException ex = new SmbUnsupportedOperationException();

      return emptySet();
    } else {
      return emptyList();
    }
  }

  @Override
  public void clear() {
    keySet().clear();
  }

  @Override
  Set<K> createKeySet() {
    return Sets.filter(unfiltered.keySet(), keyPredicate);
  }

  @Override
  public Collection<V> get(@ParametricNullness K key) {
    if (keyPredicate.apply(key)) {
      return unfiltered.get(key);

      return emptySet();
    } else {
      return emptyList();
    }
  }

  @Override
  public void clear() {
    keySet().clear();
  }

  @Override
  Set<K> createKeySet() {
    return Sets.filter(unfiltered.keySet(), keyPredicate);
  }

  @Override
  public Collection<V> get(@ParametricNullness K key) {
    if (keyPredicate.apply(key)) {
      return unfiltered.get(key);

            FileUtil.deleteInBackground(tempFile);
        }

        return new ExtractData(buf.toString().trim());
    }

    /**
     * Sets the maximum content size for extraction.
     *
     * @param maxContentSize the maximum content size to set (-1 for no limit)
     */
    public void setMaxContentSize(final long maxContentSize) {
        this.maxContentSize = maxContentSize;
    }

 *   <li>{@link Lists}
 *   <li>{@link Maps}
 *   <li>{@link MoreCollectors}
 *   <li>{@link Multimaps}
 *   <li>{@link Multisets}
 *   <li>{@link ObjectArrays}
 *   <li>{@link Queues}
 *   <li>{@link Sets}
 *   <li>{@link Streams}
 *   <li>{@link Tables}
 * </ul>
 *
 * <h2>Abstract implementations</h2>
 *
 * <ul>
 *   <li>{@link AbstractIterator}
 *   <li>{@link AbstractSequentialIterator}