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

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

    @Override
    public void execute(MavenSession session) {}

    @Override

        MavenSession m1 = new MavenSession(null, null, mavenExecutionRequest, null);
        defaultLegacySupport.setSession(m1);

        MyRunnable myRunnable = new MyRunnable();
        Thread thread = new Thread(myRunnable);
        thread.start();

        MavenSession m2 = new MavenSession(null, null, mavenExecutionRequest, null);
        defaultLegacySupport.setSession(m2);

     * <p>
     * This method will record extra information as well, like plugin occurrence or declaration location.
     */
    void reportPluginValidationIssue(
            IssueLocality locality, MavenSession mavenSession, MojoDescriptor mojoDescriptor, String issue);

    /**
     * Reports plugin Mojo issues applicable to the Mojo itself.
     * <p>

        DefaultMavenExecutionRequest request = new DefaultMavenExecutionRequest();
        MavenSession mavenSession = new MavenSession(rsession, request, new DefaultMavenExecutionResult());
        DefaultSession session =
                new DefaultSession(mavenSession, null, null, null, new SimpleLookup(getSessionServices()), null);
        InternalSession.associate(rsession, session);

import org.apache.maven.api.plugin.descriptor.lifecycle.Phase;
import org.apache.maven.api.xml.XmlNode;
import org.apache.maven.api.xml.XmlService;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.lifecycle.DefaultLifecycles;
import org.apache.maven.lifecycle.Lifecycle;
import org.apache.maven.lifecycle.LifecycleMappingDelegate;
import org.apache.maven.lifecycle.LifecycleNotFoundException;

 * <tr><td><code>repositorySystemSession</code></td><td> (since Maven 3)</td>
 *                                             <td>{@link MavenSession#getRepositorySession()}</td></tr>
 * <tr><td><code>project</code></td>           <td></td>
 *                                             <td>{@link MavenSession#getCurrentProject()}</td></tr>

 */
@Named
@Singleton
public class DefaultLegacySupport implements LegacySupport {

    private static final ThreadLocal<AtomicReference<MavenSession>> SESSION = new InheritableThreadLocal<>();

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

                .filter(parameter -> !parameter.isEditable())
                .forEach(parameter -> checkParameter(
                        mavenSession, mojoDescriptor, mojoClass, parameter, pomConfiguration, expressionEvaluator));
    }

    private void checkParameter(
            MavenSession mavenSession,
            MojoDescriptor mojoDescriptor,
            Class<?> mojoClass,
            Parameter parameter,

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.maven.execution.MavenSession;
import org.apache.maven.lifecycle.internal.LifecycleExecutionPlanCalculator;
import org.apache.maven.lifecycle.internal.LifecycleStarter;
import org.apache.maven.lifecycle.internal.LifecycleTaskSegmentCalculator;

    void testRootDirectoryWithNull() {
        RepositorySystemSession rss = new DefaultRepositorySystemSession(h -> false);
        DefaultMavenExecutionRequest mer = new DefaultMavenExecutionRequest();
        MavenSession ms = new MavenSession(null, rss, mer, null);
        DefaultSession session =
                new DefaultSession(ms, mock(RepositorySystem.class), Collections.emptyList(), null, null, null);

        assertEquals(