lookup);
        this.mavenSession = session;
        this.mavenRepositorySystem = mavenRepositorySystem;
        this.runtimeInformation = runtimeInformation;
    }

    public MavenSession getMavenSession() {
        if (mavenSession == null) {
            throw new IllegalArgumentException("Found null mavenSession on session " + this);
        }
        return mavenSession;
    }

    @Override

                    PluginVersionResolutionException;

    void execute(MavenSession session);

    // used by the site plugin 3.x
    void calculateForkedExecutions(MojoExecution mojoExecution, MavenSession session)
            throws MojoNotFoundException, PluginNotFoundException, PluginResolutionException,

        MavenSession mavenSession =
                new MavenSession(container, session, mavenExecutionRequest, new DefaultMavenExecutionResult());
        legacySupport.setSession(mavenSession);
        InternalSession iSession = new DefaultSession(
                mavenSession,
                null,
                null,
                null,

        return "deployer";
    }

    @Test
    void testArtifactInstallation() throws Exception {
        sessionScope.enter();
        try {
            sessionScope.seed(MavenSession.class, mock(MavenSession.class));

            String artifactBasedir = new File(getBasedir(), "src/test/resources/artifact-install").getAbsolutePath();

            Artifact artifact = createArtifact("artifact", "1.0");

        return "installer";
    }

    @Test
    void testArtifactInstallation() throws Exception {
        sessionScope.enter();
        try {
            sessionScope.seed(MavenSession.class, mock(MavenSession.class));

            String artifactBasedir = new File(getBasedir(), "src/test/resources/artifact-install").getAbsolutePath();

            Artifact artifact = createArtifact("artifact", "1.0");

public class ProjectExecutionEvent {

    private final MavenSession session;

    private final MavenProject project;

    private final List<MojoExecution> executionPlan;

    private final Throwable cause;

    public ProjectExecutionEvent(MavenSession session, MavenProject project) {
        this(session, project, null, null);
    }

        this.runtimeInformation = runtimeInformation;
    }

    public InternalSession newSession(MavenSession mavenSession) {
        InternalSession session = new DefaultSession(
                mavenSession, repositorySystem, null, mavenRepositorySystem, lookup, runtimeInformation);
        InternalSession.associate(mavenSession.getRepositorySession(), session);
        return session;
    }

     *
     * @param session the Maven session
     * @throws MavenExecutionException in case of issue
     */
    public void afterProjectsRead(MavenSession session) throws MavenExecutionException {
        // do nothing
    }

    /**
     * Invoked after MavenSession instance has been created.
     *
     * This callback is intended to allow extensions to inject execution properties,

    public MavenExecutionPlan calculateExecutionPlan(MavenSession session, String... tasks) {
        return new MavenExecutionPlan(null, new DefaultLifecycles());
    }

    public MavenExecutionPlan calculateExecutionPlan(MavenSession session, boolean setup, String... tasks) {
        return new MavenExecutionPlan(null, new DefaultLifecycles());
    }

    public void execute(MavenSession session) {}

import org.apache.maven.artifact.resolver.ArtifactResolutionException;
import org.apache.maven.artifact.versioning.InvalidVersionSpecificationException;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.apache.maven.plugin.version.PluginVersionNotFoundException;