ProjectLock(MavenSession session, MojoDescriptor mojoDescriptor) {
            mojos.put(Thread.currentThread(), mojoDescriptor);
            boolean aggregator = mojoDescriptor.isAggregator();
            acquiredAggregatorLock = aggregator ? aggregatorLock.writeLock() : aggregatorLock.readLock();
            acquiredProjectLock = getProjectLock(session);
            if (!acquiredAggregatorLock.tryLock()) {

        this.executeLifecycle = executeLifecycle;
    }

    /**
     * @param aggregator <code>true</code> if the Mojo uses the Maven project and its child modules,
     * <code>false</code> otherwise.
     */
    public void setAggregator(boolean aggregator) {
        this.aggregator = aggregator;
    }

    /**
     * @return <code>true</code> if the Mojo uses the Maven project and its child modules,

{"index":{"_index":"fess_config.scheduled_job","_id":"log_aggregator"}}

 * the {@code /project/subprojects/subproject} elements of the POM in the aggregator project.
 * Note that the aggregator project is required to have a {@code pom} packaging.</p>
 *
 * <p><dfn>Project inheritance</dfn> defines a parent-child relationship between projects.
 * The <dfn>child project</dfn> inherits all the information from the <dfn>parent project</dfn>
 * POM.</p>
 *
 */

        this.messageBuilderFactory = messageBuilderFactory;
    }

    public static List<MavenProject> getProjects(MavenProject project, MavenSession session, boolean aggregator) {
        if (aggregator && project.getCollectedProjects() != null) {
            // get the unsorted list of wanted projects
            Set<MavenProject> projectAndSubmodules = new HashSet<>(project.getCollectedProjects());

 *     <li>{@code war}: Packages the project as a Web Application Archive (WAR) file.</li>
 *     <li>{@code pom}: Indicates that the project does not produce a deployable artifact but is used for dependency management or as an aggregator.</li>
 *     <li>{@code maven-plugin}: Packages the project as a Maven plugin.</li>
 * </ul>
 *
 * <h2>Usage Example</h2>
 *
 * <pre>
 * {@code
 * Session session = ... // Obtain a Maven session

    }

    @Test
    void testInvalidAggregatorPackaging() throws Exception {
        SimpleProblemCollector result = validate("invalid-aggregator-packaging-pom.xml");

        assertViolations(result, 0, 1, 0);

        assertTrue(result.getErrors().get(0).contains("Aggregator projects require 'pom' as packaging."));
    }

    @Test
    void testMissingDependencyArtifactId() throws Exception {

                        Severity.ERROR,
                        Version.BASE,
                        "packaging",
                        null,
                        "with value '" + m.getPackaging() + "' is invalid. Aggregator projects "
                                + "require 'pom' as packaging.",
                        m);
            }

            for (int i = 0, n = m.getModules().size(); i < n; i++) {

    }

    @Override
    public CacheStats stats() {
      SimpleStatsCounter aggregator = new SimpleStatsCounter();
      aggregator.incrementBy(localCache.globalStatsCounter);
      for (Segment<K, V> segment : localCache.segments) {
        aggregator.incrementBy(segment.statsCounter);
      }
      return aggregator.snapshot();
    }

    @Override
    public void cleanUp() {

    }

    @Override
    public CacheStats stats() {
      SimpleStatsCounter aggregator = new SimpleStatsCounter();
      aggregator.incrementBy(localCache.globalStatsCounter);
      for (Segment<K, V> segment : localCache.segments) {
        aggregator.incrementBy(segment.statsCounter);
      }
      return aggregator.snapshot();
    }

    @Override
    public void cleanUp() {