}

    private List<MavenProject> getChildProjects(MavenProject parent, MavenExecutionRequest request) {
        final List<MavenProject> children = parent.getCollectedProjects();
        if (children != null && request.isRecursive()) {
            return children;
        } else {
            return new ArrayList<>();
        }
    }

    private Optional<MavenProject> findOptionalProjectBySelector(

        return result;
    }

    private void validatePrerequisitesForNonMavenPluginProjects(List<MavenProject> projects) {
        for (MavenProject mavenProject : projects) {
            if (!"maven-plugin".equals(mavenProject.getPackaging())) {
                Prerequisites prerequisites =
                        mavenProject.getModel().getDelegate().getPrerequisites();

import org.apache.maven.project.MavenProject;
import org.apache.maven.project.artifact.InvalidDependencyVersionException;
import org.apache.maven.settings.Settings;
import org.codehaus.plexus.component.repository.exception.ComponentLookupException;

/**
 */
@Deprecated
public interface PluginManager {
    String ROLE = PluginManager.class.getName();

    }

    @Test
    void testMultiModuleProjectProgress() {
        // prepare
        MavenProject project1 = generateMavenProject("Apache Maven Embedder 1");
        MavenProject project2 = generateMavenProject("Apache Maven Embedder 2");
        MavenProject project3 = generateMavenProject("Apache Maven Embedder 3");

        MavenSession session = mock(MavenSession.class);

     */
    void applyResumptionData(MavenExecutionRequest request, MavenProject rootProject);

    /**
     * Removes previously stored resumption data.
     * @param rootProject The root project that is being built.
     */
    void removeResumptionData(MavenProject rootProject);

    public LifecycleExecutionException(String message, MavenProject project) {
        super(message);
        this.project = project;
    }

    public LifecycleExecutionException(String message, MojoExecution execution, MavenProject project) {
        super(message);
        this.project = project;
    }

    public LifecycleExecutionException(String message, MojoExecution execution, MavenProject project, Throwable cause) {

        }
    }

    public boolean isBlackListed(MavenProject project) {
        return blackList.contains(getProjectKey(project));
    }

    private static String getProjectKey(MavenProject project) {
        return ArtifactUtils.versionlessKey(project.getGroupId(), project.getArtifactId());
    }

    public void registerBuildFailure(MavenProject project, Exception error, String task, long time) {

                Arguments.of(
                        false, new String[] {"--non-interactive", "--batch-mode"}, Slf4jMavenTransferListener.class));
    }

    private MavenProject createMavenProject(String groupId, String artifactId) {
        MavenProject project = new MavenProject();
        project.setGroupId(groupId);
        project.setArtifactId(artifactId);
        return project;
    }

    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);
    }

    public ProjectExecutionEvent(MavenSession session, MavenProject project, List<MojoExecution> executionPlan) {

import java.util.List;

import org.apache.maven.project.MavenProject;

/**
 * Describes the interdependencies between projects in the reactor.
 *
 * @since 3.0-alpha
 */
public interface ProjectDependencyGraph {

    /**
     * Gets all collected projects.
     *
     * @return All collected projects.
     *
     * @since 3.5.0
     */
    List<MavenProject> getAllProjects();

    /**