public void setSession(MavenSession session) {
        AtomicReference<MavenSession> reference = DefaultLegacySupport.SESSION.get();
        if (reference != null) {
            reference.set(null);
        }

        if (session == null && reference != null) {
            DefaultLegacySupport.SESSION.remove();
        } else {

     * @param project project reference.
     * @param artifactType artifact type.
     * @param artifactFile artifact file.
     */
    void attachArtifact(MavenProject project, String artifactType, File artifactFile);

    /**
     * Add or replace an artifact to the current project.
     * @param project the project reference.
     * @param artifactType the type (e.g. jar) or null.

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @since 3.0
 */
// TODO The configuration for the lifecycle needs to be externalized so that I can use the annotations properly for the
// wiring and reference and external source for the lifecycle configuration.
@Named
@Singleton
public class DefaultLifecycles {
    public static final String[] STANDARD_LIFECYCLES = {"clean", "default", "site", "wrapper"};

    }

    @Test
    void testThatErrorDuringProjectDependencyGraphCreationAreStored() throws Exception {
        MavenExecutionRequest request =
                createMavenExecutionRequest(getProject("cyclic-reference")).setGoals(asList("validate"));

        MavenExecutionResult result = maven.execute(request);

        assertEquals(ProjectCycleException.class, result.getExceptions().get(0).getClass());
    }

    @Test

                            reference = "AetherClassNotFound";
                        }
                    }
                }

                if (reference == null || reference.isEmpty()) {
                    reference = getReference(cause);
                }

                if (reference == null || reference.isEmpty()) {
                    reference = exception.getClass().getSimpleName();

    private static final Map<Model, Map<List<Profile>, Model>> CACHE = Collections.synchronizedMap(new WeakHashMap<>());

    // In order for the weak hash map to work correctly, we must not hold any reference to
    // the model used as the key.  So we use a dummy model as a placeholder to indicate that
    // we want to store the model used as they key.
    private static final Model KEY = Model.newInstance();

     * <p>
     * <b>NOTE:</b> This will result in a different instance of Model being returned!!!
     *
     * @param model The inbound Model instance, to serialize and reference for expression resolution
     * @param context The other context map to be used during resolution
     *
     * @return The resolved instance of the inbound Model. This is a different instance!
     *

        // The root artifact may, or may not be resolved so we need to check before we attempt to resolve.
        // This is often an artifact like a POM that is taken from disk and we already have hold of the
        // file reference. But this may be a Maven Plugin that we need to resolve from a remote repository
        // as well as its dependencies.

        if (request.isResolveRoot() /* && rootArtifact.getFile() == null */) {
            try {

 *   over {@code 1.0.0.X1}.</li>
 * </ul>
 *
 * @see <a href="https://maven.apache.org/pom.html#version-order-specification">"Versioning" in the POM reference</a>
 */
public class ComparableVersion implements Comparable<ComparableVersion> {
    private static final int MAX_INTITEM_LENGTH = 9;

    private static final int MAX_LONGITEM_LENGTH = 18;

    }

    /**
     * Add an attached artifact or replace the file for an existing artifact.
     *
     * @see MavenProject#addAttachedArtifact(org.apache.maven.artifact.Artifact)
     * @param project project reference.
     * @param artifact artifact to add or replace.
     */
    public void attachArtifact(MavenProject project, Artifact artifact) {
        project.addAttachedArtifact(artifact);
    }