There will be three items in the task list for this dataset.

The stubs also exist at different "levels", where one test might wire stubs into a specific live implementation.
In the next test that same "live implementation" will be used in a stub version instead.

Not all live services have stubs, but can be added as needed.
</body>

    private final Collection<MojoExecutionListener> listeners;

    CompoundMojoExecutionListener(Collection<MojoExecutionListener> listeners) {
        this.listeners = listeners; // NB this is live injected collection
    }

    public void beforeMojoExecution(MojoExecutionEvent event) throws MojoExecutionException {
        for (MojoExecutionListener listener : listeners) {

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

    private final ClassWorld world;

    private final ClassRealm containerRealm;

    // this is a live injected collection
    private final List<ClassRealmManagerDelegate> delegates;

    private final ClassRealm mavenApiRealm;

    /**

import org.apache.maven.extension.internal.CoreExports;

/**
 */
@Named
@Singleton
@Deprecated
public class DefaultArtifactFilterManager implements ArtifactFilterManager {

    // this is a live injected collection
    protected final List<ArtifactFilterManagerDelegate> delegates;

    protected Set<String> excludedArtifacts;

    private final Set<String> coreArtifacts;

    @Inject

    private final Collection<ProjectExecutionListener> listeners;

    CompoundProjectExecutionListener(Collection<ProjectExecutionListener> listeners) {
        this.listeners = listeners; // NB this is live injected collection
    }

    @Override
    public void beforeProjectExecution(ProjectExecutionEvent event) throws LifecycleExecutionException {
        for (ProjectExecutionListener listener : listeners) {

/**
 * The Exception class throw by the {@link ProjectBuilder} service.
 *
 * @since 4.0.0
 */
@Experimental
public class ProjectBuilderException extends MavenException {
    /**
     * @param message the message to give
     * @param e the {@link Exception}
     */
    public ProjectBuilderException(String message, Exception e) {
        super(message, e);
    }

/**
 * The Exception class throw by the {@link Lookup} service.
 *
 * @since 4.0.0
 */
@Experimental
public class LookupException extends MavenException {
    /**
     * @param message the message to give
     * @param e the {@link Exception}
     */
    public LookupException(String message, Exception e) {
        super(message, e);
    }

    /**
     * @param e the {@link Exception}
     */

 limitations under the License.
-->
Contributing to Apache Maven
======================

You have found a bug or you have an idea for a cool new feature? Contributing
code is a great way to give something back to the open source community. Before
you dig right into the code, there are a few guidelines that we need
contributors to follow so that we can have a chance of keeping on top of
things.

      Work or Derivative Works thereof in any medium, with or without
      modifications, and in Source or Object form, provided that You
      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

 *
 * @since 4.0.0
 */
@Experimental
public class SettingsBuilderException extends MavenException {

    private final List<BuilderProblem> problems;

    /**
     * @param message the message to give
     * @param e the {@link Exception}
     */
    public SettingsBuilderException(String message, Exception e) {
        super(message, e);
        this.problems = List.of();
    }