String version = null;
        Snapshot snapshot = versioning.getSnapshot();
        if (snapshot != null) {
            if (snapshot.getTimestamp() != null && snapshot.getBuildNumber() > 0) {
                String newVersion = snapshot.getTimestamp() + "-" + snapshot.getBuildNumber();
                version = baseVersion.replace(Artifact.SNAPSHOT_VERSION, newVersion);
            } else {

import static java.util.Objects.requireNonNull;

@Named
@Singleton
public class DefaultModelVersionParser implements ModelVersionParser {
    private static final String SNAPSHOT = "SNAPSHOT";
    private static final Pattern SNAPSHOT_TIMESTAMP = Pattern.compile("^(.*-)?([0-9]{8}\\.[0-9]{6}-[0-9]+)$");
    private final VersionScheme versionScheme;

    @Inject
    public DefaultModelVersionParser(VersionScheme versionScheme) {

 */
public final class ArtifactUtils {

    public static boolean isSnapshot(String version) {
        if (version != null) {
            if (version.regionMatches(
                    true,
                    version.length() - Artifact.SNAPSHOT_VERSION.length(),
                    Artifact.SNAPSHOT_VERSION,
                    0,
                    Artifact.SNAPSHOT_VERSION.length())) {
                return true;
            } else {

import java.util.Date;

import org.apache.maven.api.metadata.Metadata;
import org.eclipse.aether.artifact.Artifact;

/**
 */
abstract class MavenSnapshotMetadata extends MavenMetadata {
    static final String SNAPSHOT = "SNAPSHOT";

    protected final Collection<Artifact> artifacts = new ArrayList<>();

    protected MavenSnapshotMetadata(Metadata metadata, Path path, Date timestamp) {
        super(metadata, path, timestamp);
    }

    }

    public Object getKey() {
        return "snapshot " + artifact.getGroupId() + ":" + artifact.getArtifactId() + ":" + artifact.getBaseVersion();
    }

    public boolean isSnapshot() {
        return artifact.isSnapshot();
    }

    public int getNature() {
        return isSnapshot() ? SNAPSHOT : RELEASE;
    }

    public ArtifactRepository getRepository() {

        assertTrue(range.containsVersion(new DefaultArtifactVersion("1.1-SNAPSHOT")));
        assertTrue(range.containsVersion(new DefaultArtifactVersion("1.2-SNAPSHOT")));

        range = VersionRange.createFromVersionSpec("[1.0-SNAPSHOT,1.2]");

        assertTrue(range.containsVersion(new DefaultArtifactVersion("1.0-SNAPSHOT")));

        checkVersionsOrder("1.0-alpha-1", "1.0-alpha-2");
        checkVersionsOrder("1.0-alpha-1", "1.0-beta-1");

        checkVersionsOrder("1.0-beta-1", "1.0-SNAPSHOT");
        checkVersionsOrder("1.0-SNAPSHOT", "1.0");
        checkVersionsOrder("1.0-alpha-1-SNAPSHOT", "1.0-alpha-1");

        checkVersionsOrder("1.0", "1.0-1");
        checkVersionsOrder("1.0-1", "1.0-2");
        checkVersionsOrder("1.0.0", "1.0-1");

        metadata.setVersioning(versioning);
        return metadata;
    }

    protected static Versioning createVersioning(Snapshot snapshot) {
        Versioning versioning = new Versioning();
        versioning.setSnapshot(snapshot);
        return versioning;
    }

    public void setMetadata(Metadata metadata) {
        this.metadata = metadata;
    }

                    // if the POM didn't exist, retry if any repo is configured to always update
                    boolean snapshot = pomArtifact.isSnapshot();
                    for (ArtifactRepository repository : remoteRepositories) {
                        ArtifactRepositoryPolicy policy =
                                snapshot ? repository.getSnapshots() : repository.getReleases();

            if (artifact.isSnapshot()) {
                Matcher matcher = Artifact.VERSION_FILE_PATTERN.matcher(artifact.getVersion());
                if (matcher.matches()) {
                    Snapshot snapshot = new Snapshot();
                    snapshot.setTimestamp(matcher.group(2));
                    try {
                        snapshot.setBuildNumber(Integer.parseInt(matcher.group(3)));