logger.warn(e.getMessage());
            }
        }
    }

    @Override
    public void metadataInvalid(RepositoryEvent event) {
        Exception exception = event.getException();

        Object metadata;
        if (event.getMetadata().getFile() != null) {
            metadata = event.getMetadata().getFile();
        } else {
            metadata = event.getMetadata();
        }

  project from another, maven requires a minimum set of elements to be specified
  in each project's pom.xml.

   - [modelVersion] tells maven which version of the object model this project
       is compliant with (to support future legacy concerns)

   - [artifactId] tells maven what the artifact name is for this particular
       project. Each project should have a distinct artifactId.

import org.apache.maven.api.annotations.NotThreadSafe;

import static org.apache.maven.api.services.BaseRequest.nonNull;

/**
 * A request for creating a {@link ArtifactCoordinate} object.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface ArtifactCoordinateFactoryRequest {

    @Nonnull
    Session getSession();

    String getGroupId();

    private Map<String, MavenProject> projectReferences = new HashMap<>();

    private boolean executionRoot;

    private File parentFile;

    private Map<String, Object> context;

    private ClassRealm classRealm;

    private DependencyFilter extensionDependencyFilter;

    private final Set<String> lifecyclePhases = Collections.synchronizedSet(new LinkedHashSet<>());

        this.lifecycleStarter = lifecycleStarter;
    }

    public void execute(MavenSession session) {
        lifecycleStarter.execute(session);
    }

    // These methods deal with construction intact Plugin object that look like they come from a standard
    // <plugin/> block in a Maven POM. We have to do some wiggling to pull the sources of information

            for (org.apache.maven.api.model.Dependency dependency : mgmt.getDependencies()) {
                result.addManagedDependency(convert(dependency, stereotypes));
            }
        }

        Map<String, Object> properties = new LinkedHashMap<>();

        Prerequisites prerequisites = model.getPrerequisites();
        if (prerequisites != null) {
            properties.put("prerequisites.maven", prerequisites.getMaven());
        }

                        .map(Object::toString)
                        .toList();
                request.getModelRepositoryHolder().merge(model.getRepositories(), false);
                List<String> newRepos = request.getModelRepositoryHolder().getRepositories().stream()
                        .map(Object::toString)
                        .toList();

        ArtifactRequest artifactRequest = null;
        ArtifactDescriptorRequest artifactDescriptorRequest = null;
        Plugin plugin = null;

        while (trace != null) {
            Object data = trace.getData();
            if (data instanceof CollectStepData) {
                collectStepTrace = (CollectStepData) data;
            } else if (data instanceof ArtifactDescriptorRequest) {

            return nullify(metadata.getVersion());
        }

        private String nullify(String str) {
            return (str == null || str.isEmpty()) ? null : str;
        }

        public Object getKey() {
            return metadata.toString();
        }

        public String getRemoteFilename() {
            return metadata.getType();
        }

            this.hashCode = hash;
        }

        @Override
        public int hashCode() {
            return hashCode;
        }

        @Override
        public boolean equals(Object o) {
            if (o == this) {
                return true;
            }

            if (!(o instanceof CacheKey)) {
                return false;
            }

            CacheKey other = (CacheKey) o;