}
        }

        return results;
    }

    @Override
    public ArtifactResult resolveArtifact(RepositorySystemSession session, ArtifactRequest request)
            throws ArtifactResolutionException {
        return resolveArtifacts(session, Collections.singleton(request)).get(0);
    }

        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");

     *
     * @see org.apache.maven.api.services.ArtifactResolver#resolve(Session, Collection)
     */
    @Nonnull
    Collection<DownloadedArtifact> resolveArtifacts(@Nonnull ArtifactCoordinates... coordinates);

    /**
     * Shortcut for {@code getService(ArtifactResolver.class).resolve(...)}.
     *
     * @param coordinates coordinates of all artifacts to resolve

        this.resolvedArtifacts = resolvedArtifacts;
        this.missingArtifacts = missingArtifacts;
    }

    /**
     * artifacts that could be resolved
     *
     * @return {@link List} of {@link Artifact}
     */
    public List<Artifact> getResolvedArtifacts() {
        return resolvedArtifacts;
    }

    /**
     * artifacts that could NOT be resolved

        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(pomArtifact, repositories, context);
            request.setTrace(trace);
            pomArtifact = resolver.resolveArtifact(session, request).getArtifact();
        } catch (ArtifactResolutionException e) {
            throw new UnresolvableModelException(e.getMessage(), groupId, artifactId, version, e);
        }

        }

        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);

            try {
                ArtifactRequest request = new ArtifactRequest(pomArtifact, repositories, context);
                request.setTrace(trace);
                pomArtifact = resolver.resolveArtifact(session, request).getArtifact();
            } catch (ArtifactResolutionException e) {
                throw new UnresolvableModelException(e.getMessage(), groupId, artifactId, version, e);
            }

                        new ArtifactRequest(pomArtifact, request.getRepositories(), request.getRequestContext());
                resolveRequest.setTrace(trace);
                resolveResult = artifactResolver.resolveArtifact(session, resolveRequest);
                pomArtifact = resolveResult.getArtifact();
                result.setRepository(resolveResult.getRepository());
            } catch (ArtifactResolutionException e) {