Artifact a = artifactFactory.createArtifactWithClassifier("groupId", "a", "0.0.1-SNAPSHOT", "jar", null);
        File file = new File(localRepository.getBasedir(), localRepository.pathOf(a));
        a.setFile(file);

        assertEquals(
                "a-0.0.1-SNAPSHOT.jar.lastUpdated",
                updateCheckManager.getTouchfile(a).getName());

    @Override
    public Object[] toArray() {
      return snapshot().toArray();
    }

    @Override
    public <T> T[] toArray(T[] array) {
      return snapshot().toArray(array);
    }

    /*
     * We'd love to use 'new ArrayList(this)' or 'list.addAll(this)', but
     * either of these would recurse back to us again!
     */
    private List<E> snapshot() {

 *
 * @since 4.0.0
 */
@Experimental
@Consumer
public interface VersionResolver extends Service {

    /**
     * Resolves an artifact's meta version (if any) to a concrete version. For example, resolves "1.0-SNAPSHOT"
     * to "1.0-20090208.132618-23" or "RELEASE"/"LATEST" to "2.0".
     *
     * @param session The repository session, must not be {@code null}.

     * </repository>
     * <snapshotRepository>
     * <id>some-snap-repo</id>
     * <url>scp://host/snapshot-path</url>
     * </snapshotRepository>
     * </distributionManagement>
     * ]]></origin>
     * <usage><![CDATA[
     * The repositories onto which artifacts should be deployed.
     * One is for releases, the other for snapshots.
     * ]]></usage>
     * </expression>
     * <expressions>
     *
     * @throws IOException

    @Override
    public Object[] toArray() {
      return snapshot().toArray();
    }

    @Override
    @SuppressWarnings("nullness") // b/192354773 in our checker affects toArray declarations
    public <T extends @Nullable Object> T[] toArray(T[] array) {
      return snapshot().toArray(array);
    }

    private List<Multiset.Entry<E>> snapshot() {

        return "";
    }

    @Override
    public String getVersion() {
        return "";
    }

    @Override
    public Nature getNature() {
        return Nature.RELEASE_OR_SNAPSHOT;
    }

        assertFalse(ArtifactUtils.isSnapshot(null));
        assertFalse(ArtifactUtils.isSnapshot(""));
        assertFalse(ArtifactUtils.isSnapshot("1.2.3"));
        assertTrue(ArtifactUtils.isSnapshot("1.2.3-SNAPSHOT"));
        assertTrue(ArtifactUtils.isSnapshot("1.2.3-snapshot"));
        assertTrue(ArtifactUtils.isSnapshot("1.2.3-20090413.094722-2"));
        assertFalse(ArtifactUtils.isSnapshot("1.2.3-20090413X094722-2"));
    }

         */

        if (artifact.isSnapshot()) {
            Snapshot snapshot = new Snapshot();
            snapshot.setLocalCopy(true);
            artifact.addMetadata(new SnapshotArtifactRepositoryMetadata(artifact, snapshot));
        }

        Versioning versioning = new Versioning();
        // TODO Should this be changed for MNG-6754 too?

    /**
     * Checks whether a given artifact version is considered a {@code SNAPSHOT} or not.
     * <p>
     * Shortcut for {@code getService(ArtifactManager.class).isSnapshot(...)}.
     * <p>
     * In case there is {@link Artifact} in scope, the recommended way to perform this check is
     * use of {@link Artifact#isSnapshot()} instead.
     *
     * @param version artifact version

                merge(SNAPSHOT + key, infos, sv.getUpdated(), sv.getVersion(), repository);
            }
        }

        Snapshot snapshot = versioning.getSnapshot();
        if (snapshot != null && versioning.getSnapshotVersions().isEmpty()) {
            String version = artifact.getVersion();
            if (snapshot.getTimestamp() != null && snapshot.getBuildNumber() > 0) {