if (previous.isActive()) {
                        // Version mediation
                        VersionRange previousRange = previous.getArtifact().getVersionRange();
                        VersionRange currentRange = node.getArtifact().getVersionRange();

                        if ((previousRange != null) && (currentRange != null)) {

     */
    @Nullable
    VersionRange getVersionRange();

    /**
     * Returns the recommended version of this constraint, or {@code null} if none.
     * <p>
     * Note: only one, this method or {@link #getVersionRange()} method must return non-{@code null} value.
     */
    @Nullable
    Version getRecommendedVersion();

    /**

                + artifact.getVersionRange() + ")");
    }

    @Override
    public void restrictRange(Artifact artifact, Artifact replacement, VersionRange newRange) {
        logger.debug(indent + artifact + " (range restricted from: " + artifact.getVersionRange() + " and: "
                + replacement.getVersionRange() + " to: " + newRange + " )");
    }

    /**

                + " It is derived from the main artifact.");
    }

    @Override
    public VersionRange getVersionRange() {
        return parent.getVersionRange();
    }

    @Override
    public void setVersionRange(VersionRange range) {
        throw new UnsupportedOperationException("Cannot change the version information for an attached artifact."

    ArtifactHandler getArtifactHandler();

    List<String> getDependencyTrail();

    void setDependencyTrail(List<String> dependencyTrail);

    void setScope(String scope);

    VersionRange getVersionRange();

    void setVersionRange(VersionRange newRange);

    void selectVersion(String version);

    void setGroupId(String groupId);

    void setArtifactId(String artifactId);

    @Override
    public void setScope(String scope) {
        artifact.setScope(scope);
    }

    /** {@inheritDoc} */
    @Override
    public VersionRange getVersionRange() {
        return artifact.getVersionRange();
    }

    /** {@inheritDoc} */
    @Override
    public void setVersionRange(VersionRange newRange) {
        artifact.setVersionRange(newRange);
    }

            String classifier,
            String extension) {
        super(
                source.getGroupId(),
                source.getArtifactId(),
                source.getVersionRange(),
                source.getScope(),
                extension,
                classifier,
                new TransformedArtifactHandler(

        if (artifact == null) {
            return null;
        }

        String version = artifact.getVersion();
        if (version == null && artifact.getVersionRange() != null) {
            version = artifact.getVersionRange().toString();
        }

        Map<String, String> props = null;
        if (org.apache.maven.artifact.Artifact.SCOPE_SYSTEM.equals(artifact.getScope())) {

    }

    @Override
    public int getNature() {
        if (artifact.getVersion() != null) {
            return artifact.isSnapshot() ? SNAPSHOT : RELEASE;
        }

        VersionRange range = artifact.getVersionRange();
        if (range != null) {
            for (Restriction restriction : range.getRestrictions()) {
                if (isSnapshot(restriction.getLowerBound()) || isSnapshot(restriction.getUpperBound())) {

        this.dependencyTrail = dependencyTrail;
    }

    @Override
    public void setScope(String scope) {
        this.scope = scope;
    }

    @Override
    public VersionRange getVersionRange() {
        return versionRange;
    }

    @Override
    public void setVersionRange(VersionRange versionRange) {
        this.versionRange = versionRange;
        selectVersionFromNewRangeIfAvailable();