}

    protected String getKey(String classifier, String extension) {
        return classifier + ':' + extension;
    }

    @Override
    public String getGroupId() {
        return metadata.getGroupId();
    }

    @Override
    public String getArtifactId() {
        return metadata.getArtifactId();
    }

    @Override

    // -----------/
    // - Methods -/
    // -----------/

    /**
     * Get the artifact ID of the extension.
     *
     * @return String
     */
    public String getArtifactId() {
        return this.artifactId;
    } // -- String getArtifactId()

    /**
     * Get the class loading strategy: 'self-first' (the default),
     * 'parent-first' (loads classes from the parent, then from the

        path.append(artifact.getGroupId().replace('.', '/')).append('/');

        path.append(artifact.getArtifactId()).append('/');

        path.append(artifact.getBaseVersion()).append('/');

        path.append(artifact.getArtifactId()).append('-').append(artifact.getVersion());

        if (!artifact.getClassifier().isEmpty()) {

    public List<String> findVersions(Artifact artifact) {
        List<String> versions = getProjects()
                .getOrDefault(artifact.getGroupId(), Collections.emptyMap())
                .getOrDefault(artifact.getArtifactId(), Collections.emptyMap())
                .values()
                .stream()
                .map(MavenProject::getVersion)

        return create(DependencyCoordinatesFactoryRequest.build(
                session,
                dependency.getGroupId(),
                dependency.getArtifactId(),
                dependency.getVersion(),
                dependency.getClassifier(),
                null,
                dependency.getType()));
    }

    @Nonnull

                "SOURCE",
                merged.getArtifactId(),
                "Expected merged artifactId to be SOURCE but was " + merged.getArtifactId());

        merged = mavenMerger.merge(target, source, false, null);
        assertEquals(
                "TARGET",
                merged.getArtifactId(),
                "Expected merged artifactId to be TARGET but was " + merged.getArtifactId());
    }

    @Test

        return new LocalSnapshotMetadata(metadata, path, timestamp);
    }

    public Object getKey() {
        return getGroupId() + ':' + getArtifactId() + ':' + getVersion();
    }

    public static Object getKey(Artifact artifact) {
        return artifact.getGroupId() + ':' + artifact.getArtifactId() + ':' + artifact.getBaseVersion();
    }

    @Override
    protected void merge(Metadata recessive) {

    /** {@inheritDoc} */
    @Override
    public String getGroupId() {
        return artifact.getGroupId();
    }

    /** {@inheritDoc} */
    @Override
    public String getArtifactId() {
        return artifact.getArtifactId();
    }

    /** {@inheritDoc} */
    @Override
    public String getVersion() {
        return artifact.getVersion();
    }

    /** {@inheritDoc} */
    @Override

        return false;
    }

    @Override
    public String getGroupId() {
        return artifact.getGroupId();
    }

    @Override
    public String getArtifactId() {
        return artifact.getArtifactId();
    }

    @Override
    public String getBaseVersion() {
        // Don't want the artifact's version in here, as this is stored in the directory above that
        return null;
    }

                    "parent.artifactId", problems, Severity.FATAL, Version.BASE, parent.getArtifactId(), parent);

            validateStringNotEmpty(
                    "parent.version", problems, Severity.FATAL, Version.BASE, parent.getVersion(), parent);

            if (equals(parent.getGroupId(), m.getGroupId()) && equals(parent.getArtifactId(), m.getArtifactId())) {
                addViolation(
                        problems,