ArtifactResult artifactResult = system.resolveArtifact(session, artifactRequest);
        checkArtifactResult(artifactResult, "artifact-1.0.jar");

        artifact = new DefaultArtifact("ut.simple:artifact:zip:1.0");
        artifactRequest.setArtifact(artifact);
        artifactResult = system.resolveArtifact(session, artifactRequest);
        checkArtifactResult(artifactResult, "artifact-1.0.zip");

        if (artifacts == null) {
            if (artifactFilter == null || resolvedArtifacts == null) {
                artifacts = new LinkedHashSet<>();
            } else {
                artifacts = new LinkedHashSet<>(resolvedArtifacts.size() * 2);
                for (Artifact artifact : resolvedArtifacts) {
                    if (artifactFilter.include(artifact)) {

        }

        try {
            ArtifactRequest request = new ArtifactRequest(pluginArtifact, repositories, REPOSITORY_CONTEXT);
            request.setTrace(trace);
            pluginArtifact = repoSystem.resolveArtifact(session, request).getArtifact();
        } catch (ArtifactResolutionException e) {
            throw new PluginResolutionException(plugin, e.getResult().getExceptions(), e);
        }

        return pluginArtifact;

        ArtifactCoordinates coords =
                session.createArtifactCoordinates("org.codehaus.plexus", "plexus-utils", "1.4.5", "pom");

        DownloadedArtifact resolved = session.resolveArtifact(coords);
        assertNotNull(resolved);
        assertNotNull(resolved.getPath());
        Optional<Path> op = session.getArtifactPath(resolved);