}

    public static class TaskWithDestroyable extends TaskWithAction {
        File destroyable;

        @Inject
        public TaskWithDestroyable(File destroyable) {
            this.destroyable = destroyable;
        }

        @Destroys
        public File getDestroyable() {
            return destroyable;
        }
    }

    public static class TaskWithNestedBean extends TaskWithAction {

        given:
        def outputDir = file("outDir")
        def outputFile = file("parent/outFile")
        def localStateFile = file("local-state/stateFile")
        def destroyableFile = file("destroyable/file.txt")

        when:
        step.execute(work, context)

        then:
        _ * work.visitOutputs(_ as File, _ as UnitOfWork.OutputVisitor) >> { File workspace, UnitOfWork.OutputVisitor visitor ->

    def "notifies listener about specific outputs changing"() {
        def outputDir = file("output-dir")
        def localStateDir = file("local-state-dir")
        def destroyableDir = file("destroyable-dir")
        def changingOutputs = [
            outputDir.absolutePath,
            destroyableDir.absolutePath,
            localStateDir.absolutePath
        ]

        when: