/**
     * We are interested in project success events, in which case we call
     * the {@link #installIntoProjectLocalRepository(MavenProject)} method.
     * The mojo started event is also captured to determine the lifecycle
     * phases the project has been through.
     *
     * @param event the execution event
     */
    private void processEvent(ExecutionEvent event) {
        MavenProject project = event.getProject();

        if (listener != null) {
            RepositoryEvent.Builder event = new RepositoryEvent.Builder(session, EventType.METADATA_INVALID);
            event.setTrace(trace);
            event.setMetadata(metadata);
            event.setException(exception);
            event.setRepository(repository);
            listener.metadataInvalid(event.build());
        }
    }

    }

    private final Logger logger = LoggerFactory.getLogger(getClass());

    @Override
    public void onEvent(Object event) {
        if (event instanceof ExecutionEvent) {
            ExecutionEvent executionEvent = (ExecutionEvent) event;
            if (executionEvent.getType() == ExecutionEvent.Type.SessionStarted) {
                RepositorySystemSession repositorySystemSession =

        }

        return updateScope;
    }

    private void fireEvent(int event, List<ResolutionListener> listeners, ResolutionNode node) {
        fireEvent(event, listeners, node, null);
    }

    private void fireEvent(int event, List<ResolutionListener> listeners, ResolutionNode node, Artifact replacement) {
        fireEvent(event, listeners, node, replacement, null);
    }

    private void fireEvent(

import org.apache.maven.artifact.repository.RepositoryCache;
import org.apache.maven.internal.impl.SettingsUtilsV4;
import org.apache.maven.model.Profile;
import org.apache.maven.monitor.event.EventDispatcher;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.ProjectBuildingRequest;
import org.apache.maven.settings.Mirror;

            Exception exception) {
        RepositoryEvent.Builder event = new RepositoryEvent.Builder(session, EventType.METADATA_INVALID);
        event.setTrace(trace);
        event.setMetadata(metadata);
        event.setException(exception);
        event.setRepository(repository);

        repositoryEventDispatcher.dispatch(event.build());
    }

** Accessibility of offline status

  Offline status should be indicated in the MavenSettings instance, since it
  can conceivably be set from either the settings.xml or the command-line.

  In the event the '-o' switch is the impetus for setting offline mode, this
  should result in modification of the active profile in the MavenSettings
  instance, just as definition of the active profile from the command-line

            Exception exception) {
        RepositoryEvent.Builder event = new RepositoryEvent.Builder(session, EventType.METADATA_INVALID);
        event.setTrace(trace);
        event.setMetadata(metadata);
        event.setException(exception);
        event.setRepository(repository);

        repositoryEventDispatcher.dispatch(event.build());
    }

    private void merge(

        Exception ex = assertThrows(Exception.class, () -> projectBuilder.build(pomFile, configuration));
        assertThat(ex.getMessage(), containsString("Received non-all-whitespace CHARACTERS or CDATA event"));

        // multi projects build entry point
        ProjectBuildingException pex = assertThrows(
                ProjectBuildingException.class,

                assertNotNull(event.getSession());
                assertNotNull(event.getProject());
                assertNotNull(event.getExecution());
                assertNotNull(event.getMojo());
                assertNull(event.getCause());

                log.add("beforeMojoExecution " + event.getProject().getArtifactId() + ":"