ArtifactRepository repository = res.getRequest().getRepository();
                if (repository == null) {
                    repository = request.getRepositorySession().getLocalRepository();
                }

                PluginPrefixResult result =
                        resolveFromRepository(request, trace, metadata.getGroupId(), metadata, repository, candidates);

                if (result != null) {

 *   <li>Accessing plugin artifacts and their dependencies</li>
 * </ul>
 *
 * <p>Repository validation ensures data integrity by:
 * <ul>
 *   <li>Preventing duplicate repositories that could cause confusion</li>
 *   <li>Rejecting null repository entries that would cause failures</li>
 *   <li>Maintaining consistent repository ordering for reproducible builds</li>
 * </ul>
 *
 * @since 4.0.0
 * @see RemoteRepository

            for (RemoteRepository repository : remoteRepositories) {
                repos.append(", ");

                if (repository != null) {
                    repos.append(repository.getId())
                            .append(" (")
                            .append(repository.getUrl())
                            .append(")");
                }
            }
        }

    private boolean blocked;

    public MavenArtifactRepository() {}

    /**
     * Create a remote download repository.
     *
     * @param id        the unique identifier of the repository
     * @param url       the URL of the repository
     * @param layout    the layout of the repository
     * @param snapshots the policies to use for snapshots
     * @param releases  the policies to use for releases
     */

    }

    @Override
    public void addRepository(Repository repository) throws InvalidRepositoryException {
        addRepository(repository, false);
    }

    @Override
    public void addRepository(final Repository repository, boolean replace) throws InvalidRepositoryException {
        if (!repositoryIds.add(repository.getId())) {
            if (!replace) {
                return;
            }

   |
   | It works like this: a POM may declare a repository to use in resolving certain artifacts.
   | However, this repository may have problems with heavy traffic at times, so people have mirrored
   | it to several places.
   |
   | That repository definition will have a unique id, so we can create a mirror reference for that
   | repository, to be used as an alternate download site. The mirror site will be the preferred

    /**
     * Gets the local repository to use for the resolution.
     *
     * @return The local repository to use for the resolution or {@code null} if not set.
     */
    @Override
    ArtifactRepository getLocalRepository();

    /**
     * Sets the local repository to use for the resolution.
     *
     * @param localRepository The local repository to use for the resolution.

/**
 * Tests {@code Repository}.
 *
 */
class RepositoryTest {

    @Test
    void testHashCodeNullSafe() {
        new Repository().hashCode();
    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new Repository().equals(null));

        new Repository().equals(new Repository());
    }

    @Test
    void testEqualsIdentity() {

        this.packageName = packageDeclaration.getNameAsString();
        super.visit(packageDeclaration, repository);
    }

    @Override
    public void visit(ClassOrInterfaceDeclaration classDeclaration, ClassMetaDataRepository<ClassMetaData> repository) {

    private static int repositoryHashCode(ArtifactRepository repository) {
        int result = 17;
        result = 31 * result + (repository.getId() != null ? repository.getId().hashCode() : 0);
        return result;
    }

    private static int repositoriesHashCode(List<ArtifactRepository> repositories) {
        int result = 17;
        for (ArtifactRepository repository : repositories) {