}

    @Override
    protected boolean canDetectActivation(Profile profile) {
        return profile.getActivation() != null
                && profile.getActivation().getJdk() != null
                && !profile.getActivation().getJdk().isEmpty();
    }

import org.apache.maven.model.profile.ProfileActivationContext;

/**
 * Determines profile activation based on the version of the current Java runtime.
 *
 * @see Activation#getJdk()
 * @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */
@Named("jdk-version")
@Singleton
@Deprecated(since = "4.0.0")
public class JdkVersionProfileActivator implements ProfileActivator {

                .build();

        Profile clone = SettingsUtilsV4.convertToSettingsProfile(SettingsUtilsV4.convertFromSettingsProfile(p));

        assertEquals(p.getId(), clone.getId());
        assertEquals(p.getActivation().getJdk(), clone.getActivation().getJdk());
        assertEquals(
                p.getActivation().getFile().getExists(),
                clone.getActivation().getFile().getExists());
        assertEquals(

            activation.setActiveByDefault(profileActivation.isActiveByDefault());

            activation.setJdk(profileActivation.getJdk());

            org.apache.maven.profiles.ActivationProperty profileProp = profileActivation.getProperty();

            if (profileProp != null) {
                ActivationProperty prop = new ActivationProperty();

                prop.setName(profileProp.getName());

            if (activation != null) {
                String org, val;
                // Jdk
                org = activation.getJdk();
                val = interpolate(org);
                if (org != val) {
                    activation.setJdk(val);
                }
                // OS
                visit(activation.getOs());
                // Property

                parentIds.add(currentData.getId());
                // Reset - only needed for 'getId'.
                currentData.setGroupId(null);
                currentData.setArtifactId(null);
                currentData.setVersion(null);
                currentData = parentData;
            } else if (!parentIds.add(parentData.getId())) {

                if (!minProfileIds.add(profile.getId())) {
                    addViolation(
                            problems,
                            Severity.WARNING,
                            Version.BASE,
                            "profiles.profile.id",
                            null,
                            "Duplicate activation for profile " + profile.getId(),
                            profile);

    void testHashVariousInputSizes(String input) {
        // Given
        byte[] data = input.getBytes();

        // When
        MessageDigest md4 = Crypto.getMD4();
        MessageDigest md5 = Crypto.getMD5();
        byte[] md4Hash = md4.digest(data);
        byte[] md5Hash = md5.digest(data);

        // Then
        assertNotNull(md4Hash);
        assertNotNull(md5Hash);

        Profile notActivated = new Profile();
        notActivated.setId("notActivated");

        Activation nonActivation = new Activation();

        nonActivation.setJdk("19.2");

        notActivated.setActivation(nonActivation);

        Profile defaultActivated = new Profile();
        defaultActivated.setId("defaultActivated");

     */
    public static MessageDigest getMD4() {
        try {
            return MessageDigest.getInstance("MD4", getProvider());
        } catch (final NoSuchAlgorithmException e) {
            throw new CIFSUnsupportedCryptoException(e);
        }
    }

    /**
     * Get an MD5 message digest instance.
     * @return MD5 digest instance
     */
    public static MessageDigest getMD5() {
        try {