public boolean isUniqueVersion() {
        return true;
    }

    public List<ArtifactRepository> getMirroredRepositories() {
        return mirroredRepositories;
    }

    public void setMirroredRepositories(List<ArtifactRepository> mirroredRepositories) {
        if (mirroredRepositories != null) {
            this.mirroredRepositories = Collections.unmodifiableList(mirroredRepositories);
        } else {

                    repository.getUrl(),
                    repository.getLayout(),
                    repository.getSnapshots(),
                    repository.getReleases());

            repository.setMirroredRepositories(Collections.singletonList(original));

            repository.setId(mirror.getId());
            repository.setUrl(mirror.getUrl());

            if (mirror.getLayout() != null && !mirror.getLayout().isEmpty()) {

     */
    List<ArtifactRepository> getMirroredRepositories();

    /**
     * @since 3.0.3
     * @param mirroredRepositories the repositories that the actual one mirrors
     */
    void setMirroredRepositories(List<ArtifactRepository> mirroredRepositories);