// all Jars have a javaModule=false attribute by default; the transform also recognizes modules and returns them without modification
        project.getDependencies().getArtifactTypes().getByName("jar").getAttributes().attribute(javaModule, false);

        // register the transform for Jars and "javaModule=false -> javaModule=true"; the plugin extension object fills the input parameter

        attributesSchema.addFailureDescriber(IncompatibleGraphVariantFailure.class, TargetJVMVersionOnLibraryTooNewFailureDescriber.class);

        project.getDependencies().getArtifactTypes().create(ArtifactTypeDefinition.JAR_TYPE).getAttributes()
            .attribute(Usage.USAGE_ATTRIBUTE, objectFactory.named(Usage.class, Usage.JAVA_RUNTIME))

import spock.lang.Specification

class DefaultScriptHandlerTest extends Specification {
    def repositoryHandler = Mock(RepositoryHandler)
    def dependencyHandler = Mock(DependencyHandler) {
        getArtifactTypes() >> new DefaultArtifactTypeContainer(TestUtil.instantiatorFactory().decorateLenient(), AttributeTestUtil.attributesFactory(), CollectionCallbackActionDecorator.NOOP)
    }

    }

    @Override
    public ArtifactTypeContainer getArtifactTypes() {
        return artifactTypeContainer.create();
    }

    @Override
    public void artifactTypes(Action<? super ArtifactTypeContainer> configureAction) {
        configureAction.execute(getArtifactTypes());
    }

    @Override
    public AttributeContainer getDefaultArtifactAttributes() {

        delegate.attributesSchema(configureAction)

    override fun getAttributesSchema(): AttributesSchema =
        delegate.attributesSchema

    override fun getArtifactTypes(): ArtifactTypeContainer =
        delegate.artifactTypes

    override fun artifactTypes(configureAction: Action<in ArtifactTypeContainer>) =
        delegate.artifactTypes(configureAction)

     * @since 3.4
     */
    AttributesSchema getAttributesSchema();

    /**
     * Returns the artifact type definitions for this handler.
     * @since 4.0
     */
    ArtifactTypeContainer getArtifactTypes();

    /**
     * Configures the artifact type definitions for this handler.
     * @since 4.0
     */
    void artifactTypes(Action<? super ArtifactTypeContainer> configureAction);

    /**