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

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

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

    public void sessionStarted(ExecutionEvent event) {
        // default does nothing
    }

    public void sessionEnded(ExecutionEvent event) {
        // default does nothing
    }

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

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

 */
public interface ExecutionListener {

    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);

public interface ExecutionEvent {

    /**
     * The possible types of execution events.
     */
    enum Type {
        ProjectDiscoveryStarted,
        SessionStarted,
        SessionEnded,
        ProjectSkipped,
        ProjectStarted,
        ProjectSucceeded,
        ProjectFailed,
        MojoSkipped,
        MojoStarted,
        MojoSucceeded,
        MojoFailed,
        ForkStarted,
        ForkSucceeded,

        logger.info("Total time:  {}{}", formatDuration(time), wallClock);

        logger.info("Finished at: {}", formatTimestamp(finish));
    }

    @Override
    public void projectSkipped(ExecutionEvent event) {
        if (logger.isInfoEnabled()) {
            init();
            logger.info("");
            infoLine('-');
            String name = event.getProject().getName();