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() {

        this.expandedDistTask = expandedDistTask;
        this.name = name;
    }

    public void setArchiveClassifier(String classifier) {
        this.archiveTask.configure(abstractArchiveTask -> abstractArchiveTask.getArchiveClassifier().set(classifier));
    }

    public void content(Supplier<CopySpec> p) {
        this.archiveTask.configure(t -> t.with(p.get()));

    @Nonnull
    String getGroupId();

    /**
     * {@return the identifier of the artifact}.
     */
    @Nonnull
    String getArtifactId();

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

    /**

            String groupId,
            String artifactId,
            VersionRange versionRange,
            String type,
            String classifier,
            String scope,
            boolean optional) {
        return createArtifactX(groupId, artifactId, versionRange, type, classifier, scope, null, optional);
    }

    private Artifact createProjectArtifactX(String groupId, String artifactId, String version) {

        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));

     */
    @Nonnull
    String getExtension();

    /**
     * Get the default classifier associated to the dependency type.
     * The default classifier can be overridden when specifying
     * the {@link Dependency#getClassifier()}.
     *
     * @return the default classifier, or {@code null}.
     */
    @Nullable
    String getClassifier();

    /**

            project.getTasks().withType(ShadowJar.class).configureEach(shadowJar -> {
                    /*
                     * Replace the default "-all" classifier with null
                     * which will leave the classifier off of the file name.
                     */
                    shadowJar.getArchiveClassifier().set((String) null);
                    /*

    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() {

      <fields>
        <field>
          <name>classifier</name>
          <version>1.1.0+</version>
          <type>String</type>
          <description>The classifier of the sub-artifact. Each classifier and extension pair may only appear once.</description>
          <defaultValue></defaultValue>
          <identifier>true</identifier>

                        && srcInfo.repository != dstInfo.repository)) {
            infos.put(dstKey, srcInfo);
        }
    }

    private String getKey(String classifier, String extension) {
        return (classifier == null ? "" : classifier.trim()) + ':' + (extension == null ? "" : extension.trim());
    }

    private ArtifactRepository getRepository(