import javax.annotation.Nullable;

/**
 * <p>An {@code Artifact} represents an artifact included in a {@link org.gradle.api.artifacts.Dependency}.</p>
 * An artifact is an (immutable) value object.
 */
public interface DependencyArtifact {
    String DEFAULT_TYPE = "jar";

    /**
     * Returns the name of this artifact.
     */
    String getName();

    /**
     * Sets the name of this artifact.
     */

            return null;
        }

        if (Artifact.SCOPE_SYSTEM.equals(effectiveScope)) {
            dependencyArtifact.setFile(new File(dependency.getSystemPath()));
        }

        dependencyArtifact.setDependencyFilter(createDependencyFilter(dependency, inheritedFilter));

        return dependencyArtifact;
    }

    }

    protected List<IvyArtifactName> convertArtifacts(Set<DependencyArtifact> dependencyArtifacts) {
        if (dependencyArtifacts.isEmpty()) {
            return Collections.emptyList();
        }
        ImmutableList.Builder<IvyArtifactName> names = ImmutableList.builder();
        for (DependencyArtifact dependencyArtifact : dependencyArtifacts) {

    private final IvyArtifactName dependencyArtifact;

    public MavenDependencyDescriptor(MavenScope scope, MavenDependencyType type, ModuleComponentSelector selector,
                                     @Nullable IvyArtifactName dependencyArtifact, List<ExcludeMetadata> excludes) {
        this.scope = scope;
        this.selector = selector;
        this.type = type;
        this.dependencyArtifact = dependencyArtifact;

        return new ModuleMetadataSpec.ArtifactSelector(
            dependencyArtifact.getName(),
            dependencyArtifact.getType(),
            dependencyArtifact.getExtension() == null ? dependencyArtifact.getType() : dependencyArtifact.getExtension(),
            isNullOrEmpty(dependencyArtifact.getClassifier()) ? null : dependencyArtifact.getClassifier()

        private static void writeDependencyArtifact(DependencyArtifact dependencyArtifact, OptionalAttributeXmlWriter xmlWriter) throws IOException {
            // TODO Use IvyArtifact here
            xmlWriter.startElement("artifact")
                .attribute("name", dependencyArtifact.getName())
                .attribute("type", dependencyArtifact.getType())
                .attribute("ext", dependencyArtifact.getExtension())

    }

    private static IvyArtifactName findDescriptor(List<IvyArtifactName> artifactDescriptors, DefaultDependencyArtifact dependencyArtifact) {
        for (IvyArtifactName artifactDescriptor : artifactDescriptors) {
            if (artifactDescriptor.getName().equals(dependencyArtifact.getName())) {
                return artifactDescriptor
            }
        }

    private final String revConstraint;
    private final Set<DependencyArtifact> artifacts;
    private final Set<ExcludeRule> excludeRules;

    public DefaultIvyDependency(
        String organisation,
        String module,
        String revision,
        String confMapping,
        boolean transitive,
        @Nullable String revConstraint,
        Set<DependencyArtifact> artifacts,
        Set<ExcludeRule> excludeRules
    ) {

     *
     * @return the added artifact
     *
     * @see DependencyArtifact
     */
    DependencyArtifact artifact(@DelegatesTo(value = DependencyArtifact.class, strategy = DELEGATE_FIRST) Closure configureClosure);

    /**
     * <p>Adds an artifact to this dependency. The given action is passed a {@link
     * org.gradle.api.artifacts.DependencyArtifact} instance, which it can configure.</p>
     *

        delegate.excludeRules

    override fun addArtifact(artifact: DependencyArtifact): ModuleDependency =
        delegate.addArtifact(artifact)

    override fun artifact(configureClosure: Closure<Any>): DependencyArtifact =
        delegate.artifact(configureClosure)

    override fun artifact(configureAction: Action<in DependencyArtifact>): DependencyArtifact =
        delegate.artifact(configureAction)