* process, such as build failures, plugin errors, or other runtime issues.
 *
 * @since 4.0.0
 */
@Experimental
public class InvokerException extends MavenException {
    /**
     * Constructs a new {@code InvokerException} with the specified detail message.
     *
     * @param message the detail message explaining the cause of the exception
     */

 *
 * @author Louis Wasserman
 */
@GwtCompatible
final class GeneralRange<T extends @Nullable Object> implements Serializable {
  /** Converts a Range to a GeneralRange. */
  @SuppressWarnings("rawtypes") // https://github.com/google/guava/issues/989
  static <T extends Comparable> GeneralRange<T> from(Range<T> range) {
    T lowerEndpoint = range.hasLowerBound() ? range.lowerEndpoint() : null;

/**
 * Unit test for {@link AbstractExecutionThreadService}.
 *
 * @author Jesse Wilson
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class AbstractExecutionThreadServiceTest extends TestCase {

  private final TearDownStack tearDownStack = new TearDownStack(true);
  private final CountDownLatch enterRun = new CountDownLatch(1);
  private final CountDownLatch exitRun = new CountDownLatch(1);

     * @param enumeration the enumeration to read from
     * @return next element from enumeration cast to type
     * @throws PACDecodingException if types are incompatible
     */
    public static <T extends Object> T as(final Class<T> type, final Enumeration<?> enumeration) throws PACDecodingException {
        return as(type, enumeration.nextElement());
    }

    /**

   * @throws NullPointerException if {@code elements} contains a null element
   */
  public static <E> ImmutableList<E> copyOf(Iterable<? extends E> elements) {
    checkNotNull(elements); // TODO(kevinb): is this here only for GWT?
    return (elements instanceof Collection)
        ? copyOf((Collection<? extends E>) elements)
        : copyOf(elements.iterator());
  }

  /**

 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#multimap">{@code Multimap}</a>.
 *
 * @author Jared Levy
 * @since 2.0
 */
@GwtCompatible
public interface SetMultimap<K extends @Nullable Object, V extends @Nullable Object>
    extends Multimap<K, V> {
  /**
   * {@inheritDoc}
   *
   * <p>Because a {@code SetMultimap} has unique values for a given key, this method returns a

 * "https://github.com/google/guava/wiki/NewCollectionTypesExplained#multimap">{@code Multimap}</a>.
 *
 * @author Jared Levy
 * @since 2.0
 */
@GwtCompatible
public interface SetMultimap<K extends @Nullable Object, V extends @Nullable Object>
    extends Multimap<K, V> {
  /**
   * {@inheritDoc}
   *
   * <p>Because a {@code SetMultimap} has unique values for a given key, this method returns a

 *
 * @author Louis Wasserman
 */
@GwtCompatible
abstract class AbstractSortedKeySortedSetMultimap<
        K extends @Nullable Object, V extends @Nullable Object>
    extends AbstractSortedSetMultimap<K, V> {

  AbstractSortedKeySortedSetMultimap(SortedMap<K, Collection<V>> map) {
    super(map);
  }

  @Override
  public SortedMap<K, Collection<V>> asMap() {

 * A skeleton implementation of a descending multiset. Only needs {@code forwardMultiset()} and
 * {@code entryIterator()}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
abstract class DescendingMultiset<E extends @Nullable Object> extends ForwardingMultiset<E>
    implements SortedMultiset<E> {
  abstract SortedMultiset<E> forwardMultiset();

  @LazyInit private transient @Nullable Comparator<? super E> comparator;

  @Override

                snapshots.put(snapshotMetadata.getKey(), snapshotMetadata);
            }
        }
    }

    @Override
    public Collection<? extends Metadata> prepare(Collection<? extends Artifact> artifacts) {
        for (Artifact artifact : artifacts) {
            if (artifact.isSnapshot()) {
                Object key = RemoteSnapshotMetadata.getKey(artifact);