Iterable<String> iterable = Collections.singletonList("foo");
    assertEquals("foo", Iterables.getLast(iterable, "bar"));
  }

  public void testGetLast_withDefault_empty() {
    Iterable<String> iterable = Collections.emptyList();
    assertEquals("bar", Iterables.getLast(iterable, "bar"));
  }

  public void testGetLast_withDefault_empty_null() {
    Iterable<String> iterable = Collections.emptyList();

                settingsDecrypter,
                eventSpyDispatcher,
                information,
                defaultTypeRegistry,
                versionScheme,
                Collections.emptyMap(),
                Collections.emptyMap());

        MavenExecutionRequest request = new DefaultMavenExecutionRequest();
        request.setLocalRepository(getLocalRepository());

 * @since 3.0
 */
public class DefaultPluginPrefixRequest implements PluginPrefixRequest {

    private String prefix;

    private List<String> pluginGroups = Collections.emptyList();

    private Model pom;

    private List<RemoteRepository> repositories = Collections.emptyList();

    private RepositorySystemSession session;

    /**
     * Creates an empty request.
     */
    public DefaultPluginPrefixRequest() {}

  /**
   * For documenting collections that support no optional features, such as {@link
   * java.util.Collections#emptySet}
   */
  NONE;

  private final Set<Feature<? super Collection>> implied;

  CollectionFeature(Feature<? super Collection>... implied) {
    this.implied = Helpers.copyToSet(implied);
  }

  @Override
  public Set<Feature<? super Collection>> getImpliedFeatures() {
    return implied;

    private List<String> activeProfileIds = Collections.emptyList();

    private List<String> inactiveProfileIds = Collections.emptyList();

    private Map<String, String> systemProperties = Collections.emptyMap();

    private Map<String, String> userProperties = Collections.emptyMap();

    private Map<String, String> projectProperties = Collections.emptyMap();

    private Path projectDirectory;

    SORTED {
      @Override
      void arrange(List<Integer> list) {
        Collections.sort(list);
      }
    },
    ALMOST_SORTED {
      @Override
      void arrange(List<Integer> list) {
        Collections.sort(list);
        if (list.size() > 1) {
          int i = (list.size() - 1) / 2;
          Collections.swap(list, i, i + 1);
        }
      }
    },
    RANDOM {
      @Override

                .getOrDefault(artifact.getGroupId(), Collections.emptyMap())
                .getOrDefault(artifact.getArtifactId(), Collections.emptyMap())
                .values()
                .stream()
                .map(MavenProject::getVersion)
                .collect(Collectors.collectingAndThen(Collectors.toList(), Collections::unmodifiableList));
        if (!versions.isEmpty()) {

    assertEquals(Collections.emptyList(), list);
  }

  public void testNewLinkedListFromCollection() {
    LinkedList<Integer> list = Lists.newLinkedList(SOME_COLLECTION);
    assertEquals(SOME_COLLECTION, list);
  }

  public void testNewLinkedListFromIterable() {
    LinkedList<Integer> list = Lists.newLinkedList(SOME_ITERABLE);
    assertEquals(SOME_COLLECTION, list);
  }

  @J2ktIncompatible

import static com.google.common.collect.testing.IteratorFeature.UNMODIFIABLE;
import static java.util.Collections.emptyList;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.collect.testing.IteratorTester;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;

        return missingArtifacts != null && !missingArtifacts.isEmpty();
    }

    public List<Artifact> getMissingArtifacts() {
        return missingArtifacts == null ? Collections.emptyList() : Collections.unmodifiableList(missingArtifacts);
    }

    public ArtifactResolutionResult addMissingArtifact(Artifact artifact) {
        missingArtifacts = initList(missingArtifacts);