*
     * @return the file extension
     */
    String getExtension();

    String getDirectory();

    /**
     * Returns the default classifier used if a different one is not set in pom.xml.
     *
     * @return the classifier
     */
    String getClassifier();

    String getPackaging();

    boolean isIncludesDependencies();

    String getLanguage();

    /**

        assertEquals(
                "jar", depArtifact.getProperty("type", null)); // shouldn't it be java-sources given the classifier?
        assertEquals(
                "true",
                depArtifact.getProperty("constitutesBuildPath", null)); // shouldn't it be false given the classifier?
        assertEquals("false", depArtifact.getProperty("includesDependencies", null));

        DeployRequest request = createDeployRequestWithConsumerPom();

        DeployRequest result = transformer.remapDeployArtifacts(session, request);

        // Should have both consumer POM (no classifier) and build POM (with "build" classifier)
        Collection<Artifact> artifacts = result.getArtifacts();
        assertEquals(3, artifacts.size()); // original jar + consumer pom + build pom

    private final String extension;
    private final String classifier;
    private final boolean includesDependencies;
    private final Set<PathType> pathTypes;
    private final Map<String, String> properties;

    public DefaultType(
            String id,
            Language language,
            String extension,
            String classifier,
            boolean includesDependencies,

      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>com.google.inject</groupId>
      <artifactId>guice</artifactId>
      <classifier>classes</classifier>
      <scope>provided</scope>
    </dependency>

    <!-- Testing -->
    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-api</artifactId>

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

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

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

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

    @Override
    public String getArtifactId() {

  define for each {{{../../api/maven-api-model/maven.html#class_dependency}dependency type}} information on the artifact
  (classifier, extension, language) and how to manage it as dependency (add to classpath, include dependencies).

     */
    @Nonnull
    Version getBaseVersion();

    /**
     * Returns the classifier of the artifact.
     *
     * @return the classifier or an empty string if none, never {@code null}
     * @see ArtifactCoordinates#getClassifier()
     */
    @Nonnull
    String getClassifier();

    /**

        private String extension;

        private String classifier;

        public Artifact(String groupId, String artifactId, String version, String extension, String classifier) {
            this.groupId = groupId;
            this.artifactId = artifactId;
            this.version = version;
            this.extension = extension;
            this.classifier = classifier;
        }

        public String getGroupId() {