MavenSession ms = new MavenSession(null, rss, mer, null);
        DefaultSession session =
                new DefaultSession(ms, mock(RepositorySystem.class), Collections.emptyList(), null, null, null);

        assertEquals(
                RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE,
                assertThrows(IllegalStateException.class, session::getRootDirectory)

@Deprecated(since = "4.0.0")
public class Result<T> {

    /**
     * Success without warnings
     *
     * @param model
     */
    public static <T> Result<T> success(T model) {
        return success(model, Collections.emptyList());
    }

    /**
     * Success with warnings
     *
     * @param model
     * @param problems
     */
    public static <T> Result<T> success(T model, Iterable<? extends ModelProblem> problems) {

    List<@Nullable Integer> sortedInts = numberOrdering.nullsLast().sortedCopy(unsortedInts);
    assertEquals(Arrays.<@Nullable Integer>asList(0, 0, 3, 5, 9, null), sortedInts);

    assertEquals(emptyList(), numberOrdering.sortedCopy(Collections.<Integer>emptyList()));
  }

  public void testImmutableSortedCopy() {
    ImmutableList<Integer> unsortedInts = ImmutableList.of(5, 3, 0, 9, 3);

    List<@Nullable Integer> sortedInts = numberOrdering.nullsLast().sortedCopy(unsortedInts);
    assertEquals(Arrays.<@Nullable Integer>asList(0, 0, 3, 5, 9, null), sortedInts);

    assertEquals(emptyList(), numberOrdering.sortedCopy(Collections.<Integer>emptyList()));
  }

  public void testImmutableSortedCopy() {
    ImmutableList<Integer> unsortedInts = ImmutableList.of(5, 3, 0, 9, 3);

import org.apache.maven.project.MavenProject;

public class DefaultMavenExecutionResult implements MavenExecutionResult {
    private MavenProject project;

    private List<MavenProject> topologicallySortedProjects = Collections.emptyList();

    private DependencyResolutionResult dependencyResolutionResult;

    private final List<Throwable> exceptions = new CopyOnWriteArrayList<>();

import static com.google.common.collect.testing.features.CollectionFeature.SERIALIZABLE;
import static com.google.common.truth.Truth.assertThat;
import static java.util.Arrays.asList;
import static java.util.Collections.emptyList;
import static java.util.Collections.nCopies;
import static java.util.Collections.singletonList;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;

    }

    protected ResolutionNode createResolutionNode(Artifact artifact) {
        return new ResolutionNode(artifact, Collections.emptyList());
    }

    protected ResolutionNode createResolutionNode(Artifact artifact, ResolutionNode parent) {
        return new ResolutionNode(artifact, Collections.emptyList(), parent);
    }

  @SuppressWarnings("EmptyList") // ImmutableList doesn't support nullable element types
  CollectionFuture(
      ImmutableCollection<? extends ListenableFuture<? extends V>> futures,
      boolean allMustSucceed) {
    super(futures, allMustSucceed, true);

    List<@Nullable Present<V>> values =
        futures.isEmpty()
            ? Collections.<@Nullable Present<V>>emptyList()

    private String groupId;

    private String artifactId;

    private Model pom;

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

    private RepositorySystemSession session;

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

    /**

        actual.getCause().getMessage().contains(message));
  }

  public void testMissingException() {
    List<Integer> emptyList = new ArrayList<>();

    IteratorTester<Integer> tester =
        new IteratorTester<Integer>(
            1, MODIFIABLE, emptyList, IteratorTester.KnownOrder.KNOWN_ORDER) {
          @Override
          protected Iterator<Integer> newTargetIterator() {