}

        def transformed = jar(testDir.file("transformed.jar")) {
            manifest {
                multiRelease()
            }

            entry("Foo.class", INSTRUMENTED_CLASS)
            entry(MarkerResource.RESOURCE_NAME, MarkerResource.TRANSFORMED.asBytes())
        }

        TransformedClassPath cp = classPath((original): transformed)

        expect:

 */

package org.gradle.api.internal.artifacts.transform;

import com.google.common.collect.ImmutableList;
import org.gradle.api.Describable;
import org.gradle.api.artifacts.component.ComponentIdentifier;
import org.gradle.api.internal.artifacts.ivyservice.resolveengine.artifact.ResolvableArtifact;

import java.io.File;

/**
 * Transform subject is either an initial artifact for the transform chain or a result of a previous transform step.

     * @param action the action to add
     */
    public void addAction(Action<? super T> action) {
        actions.add(action);
    }

    /**
     * Transforms a property list object. This will modify the
     * original.
     * @param original the property list to transform
     * @return the transformed property list
     */
    @Override
    public T transform(T original) {

                    Files.exists(transformedDir.resolve("transformed/${INSTRUMENTATION_CLASSPATH_MARKER.fileName}")) ||
                    Files.exists(transformedDir.resolve("transformed/$ANALYSIS_OUTPUT_DIR/${INSTRUMENTATION_CLASSPATH_MARKER.fileName}")) ||

        result.assertTasksNotSkipped(":a:resolve")
        transformed()
        outputContains("result = [b-blue.jar.green, c.jar.green]")

        when:
        succeeds(":a:resolve")

        then: // have already seen these artifacts before, but the transform outputs have been overwritten
        result.assertTasksNotSkipped(":b:producer", ":a:resolve")
        transformed("b.jar")

    public enum MarkerResource {
        // The transformed marker resource is an empty file to reduce archive size in the most common case.
        TRANSFORMED(new byte[0]),
        // Not transformed marker resource is a 1-byte file with a single "N" symbol.
        NOT_TRANSFORMED(new byte[]{'N'});

        public static final String RESOURCE_NAME = TransformReplacer.class.getName() + ".transformed";

    }

    // Called from transformed DSL rules
    public void all(DeferredModelAction configAction) {
        mutateChildren(ModelActionRole.Initialize, elementType, configAction);
    }

    @Override
    public void beforeEach(Action<? super T> configAction) {
        mutateChildren(ModelActionRole.Defaults, elementType, "beforeEach()", configAction);
    }

    // Called from transformed DSL rules

     * @param <O> The type of the transformed object
     * @param <I> The type of the object to be transformed
     * @return A transformer that simply type casts the input to the given output type.
     */
    public static <O, I> Transformer<O, I> cast(Class<O> outputType) {
        return new CastingTransformer<O, I>(outputType);
    }

    //just returns the original object
    public static <T> Transformer<T, T> noOpTransformer() {

     * values for some of which have been changed by the transform.
     */
    Map<String, String> getTargetAttributes();

    /**
     * Capabilities of the variant of the transformed artifact.
     * <p>
     * Artifact transforms can only change attributes, so the capabilities remain unchanged throughout the transform chain.
     */
    List<? extends Capability> getCapabilities();

    /**

    def attachesLogLevelToTextOutputEvent() {
        StyledTextOutputEvent event = Mock()
        StyledTextOutputEvent transformed = Mock()

        when:
        listener.onOutput(event)

        then:
        1 * event.withLogLevel(LogLevel.LIFECYCLE) >> transformed
        1 * target.onOutput(transformed)
        0 * target._
    }

    def doesNotChangeLogLevelWhenEventAlreadyHasALogLevel() {