}

  /**
   * Does a CPU intensive operation on Integer and returns a BigInteger Used to implement an
   * ordering that spends a lot of cpu.
   */
  static class ExpensiveComputation implements Function<Integer, BigInteger> {
    @Override
    public BigInteger apply(Integer from) {
      BigInteger v = BigInteger.valueOf(from);
      // Math.sin is very slow for values outside 4*pi

 *
 * @author Louis Wasserman
 */
@GwtIncompatible
@ElementTypesAreNonnullByDefault
abstract class AbstractNavigableMap<K extends @Nullable Object, V extends @Nullable Object>
    extends IteratorBasedAbstractMap<K, V> implements NavigableMap<K, V> {

  @Override
  @CheckForNull
  public abstract V get(@CheckForNull Object key);

  @Override
  @CheckForNull
  public Entry<K, V> firstEntry() {

Interceptors
============

Interceptors are a powerful mechanism that can monitor, rewrite, and retry calls. Here's a simple interceptor that logs the outgoing request and the incoming response.

```java
class LoggingInterceptor implements Interceptor {
  @Override public Response intercept(Interceptor.Chain chain) throws IOException {
    Request request = chain.request();

    long t1 = System.nanoTime();

    }
    return set;
  }

  private Element newElement() {
    int value = random.nextInt();
    return isUserTypeFast ? new Element(value) : new SlowElement(value);
  }

  static class Element implements Comparable<Element> {
    final int hash;

    Element(int hash) {
      this.hash = hash;
    }

    @Override
    public boolean equals(@Nullable Object obj) {

 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public abstract class ForwardingTable<
        R extends @Nullable Object, C extends @Nullable Object, V extends @Nullable Object>
    extends ForwardingObject implements Table<R, C, V> {
  /** Constructor for use by subclasses. */
  protected ForwardingTable() {}

  @Override
  protected abstract Table<R, C, V> delegate();

  @Override
  public Set<Cell<R, C, V>> cellSet() {

  }

  /*
   * This class is used to serialize ImmutableEnumMap instances.
   */
  @J2ktIncompatible // serialization
  private static class EnumSerializedForm<K extends Enum<K>, V> implements Serializable {
    final EnumMap<K, V> delegate;

    EnumSerializedForm(EnumMap<K, V> delegate) {
      this.delegate = delegate;
    }

    Object readResolve() {

 * for (String element : iterable(list, set, map.keySet())) {
 *     ...
 * }
 * </pre>
 *
 * @author koichik
 * @param <E>
 *            要素の型
 */
public class MultiIterator<E> implements Iterator<E> {

    /** {@link Iterator}の配列 */
    protected final Iterator<E>[] iterators;

    /** 現在反復中の{@link Iterator}のインデックス */
    protected int index;

    /**

import org.apache.maven.wagon.repository.Repository;
import org.apache.maven.wagon.resource.Resource;

/**
 * TransferListenerAdapter
 */
@Deprecated
public class TransferListenerAdapter implements TransferListener {

    private final ArtifactTransferListener listener;

    private final Map<Resource, ArtifactTransferResource> artifacts;

    private final Map<Resource, Long> transfers;

/**
 * Decrypts passwords in the settings.
 *
 * @deprecated since 4.0.0
 */
@Named
@Singleton
@Deprecated(since = "4.0.0")
public class DefaultSettingsDecrypter implements SettingsDecrypter {
    private final SecDispatcher securityDispatcher;

    @Inject
    public DefaultSettingsDecrypter(SecDispatcher securityDispatcher) {
        this.securityDispatcher = securityDispatcher;
    }

import org.apache.maven.api.cli.ParserRequest;
import org.apache.maven.api.cli.extensions.CoreExtension;

import static java.util.Objects.requireNonNull;

public abstract class BaseInvokerRequest<T extends Options> implements InvokerRequest<T> {
    private final ParserRequest parserRequest;
    private final Path cwd;
    private final Path installationDirectory;
    private final Path userHomeDirectory;