break;

                case ProjectSkipped:
                    listener.projectSkipped(event);
                    break;
                case ProjectStarted:
                    listener.projectStarted(event);
                    break;
                case ProjectSucceeded:
                    listener.projectSucceeded(event);
                    break;
                case ProjectFailed:

        // default does nothing
    }

    @Override
    public void projectSkipped(ExecutionEvent event) {
        // default does nothing
    }

    @Override
    public void projectStarted(ExecutionEvent event) {
        // default does nothing
    }

    @Override
    public void projectSucceeded(ExecutionEvent event) {
        // default does nothing
    }

    @Override

     * {@link org.apache.maven.api.EventType} have same elements in same order.
     */
    enum Type {
        ProjectDiscoveryStarted,
        SessionStarted,
        SessionEnded,
        ProjectSkipped,
        ProjectStarted,
        ProjectSucceeded,
        ProjectFailed,
        MojoSkipped,
        MojoStarted,
        MojoSucceeded,
        MojoFailed,
        ForkStarted,
        ForkSucceeded,
        ForkFailed,

import org.eclipse.aether.transfer.TransferEvent;

/**
 * An abstract build event sink.
 */
public interface BuildEventListener {

    void sessionStarted(ExecutionEvent event);

    void projectStarted(String projectId);

    void projectLogMessage(String projectId, String event);

    void projectFinished(String projectId);

    void executionFailure(String projectId, boolean halted, String exception);

    public void projectSkipped(ExecutionEvent event) {
        dispatcher.onEvent(event);
        delegate.projectSkipped(event);
    }

    @Override
    public void projectStarted(ExecutionEvent event) {
        dispatcher.onEvent(event);
        delegate.projectStarted(event);
    }

    @Override
    public void projectSucceeded(ExecutionEvent event) {
        dispatcher.onEvent(event);
        delegate.projectSucceeded(event);

        setMdc(event);
        delegate.sessionEnded(event);
    }

    @Override
    public void projectStarted(ExecutionEvent event) {
        setMdc(event);
        buildEventListener.projectStarted(event.getProject().getArtifactId());
        delegate.projectStarted(event);
    }

    @Override
    public void projectSucceeded(ExecutionEvent event) {
        setMdc(event);

    void projectDiscoveryStarted(ExecutionEvent event);

    void sessionStarted(ExecutionEvent event);

    void sessionEnded(ExecutionEvent event);

    void projectSkipped(ExecutionEvent event);

    void projectStarted(ExecutionEvent event);

    void projectSucceeded(ExecutionEvent event);

    void projectFailed(ExecutionEvent event);

    void mojoSkipped(ExecutionEvent event);

    void mojoStarted(ExecutionEvent event);

            BuilderCommon.attachToThread(currentProject);

            projectExecutionListener.beforeProjectExecution(new ProjectExecutionEvent(session, currentProject));

            eventCatapult.fire(ExecutionEvent.Type.ProjectStarted, session, null);

            MavenExecutionPlan executionPlan =
                    builderCommon.resolveBuildPlan(session, currentProject, taskSegment, new HashSet<>());

 * The possible types of execution events.
 *
 * @since 4.0.0
 */
@Experimental
public enum EventType {
    PROJECT_DISCOVERY_STARTED,
    SESSION_STARTED,
    SESSION_ENDED,
    PROJECT_SKIPPED,
    PROJECT_STARTED,
    PROJECT_SUCCEEDED,
    PROJECT_FAILED,
    MOJO_SKIPPED,
    MOJO_STARTED,
    MOJO_SUCCEEDED,
    MOJO_FAILED,
    FORK_STARTED,
    FORK_SUCCEEDED,
    FORK_FAILED,
    FORKED_PROJECT_STARTED,