* "pom". Unconditionally, unlike {@link #toPomArtifact(Artifact)} that does this only for artifacts without
     * classifiers.
     *
     * @since 4.0.0
     */
    public static Artifact toPomArtifactUnconditionally(Artifact artifact) {
        return new DefaultArtifact(artifact.getGroupId(), artifact.getArtifactId(), "pom", artifact.getVersion());
    }

        LinkedHashSet<String> visited = new LinkedHashSet<>();
        for (Artifact a = request.getArtifact(); ; ) {
            Artifact pomArtifact = ArtifactDescriptorUtils.toPomArtifactUnconditionally(a);
            try {
                VersionRequest versionRequest =
                        new VersionRequest(a, request.getRepositories(), request.getRequestContext());