.withClassLoaderStructure(new HierarchicalClassLoaderStructure(spec1).withChild(spec2).withChild(spec3))
                .build()
        def settings2 = daemonForkOptionsBuilder()
                .withClassLoaderStructure(new HierarchicalClassLoaderStructure(spec1).withChild(spec2).withChild(spec4))
                .build()

        expect:
        !settings1.isCompatibleWith(settings2)
    }

        // Add the Gradle API filter between the user classloader and the worker infrastructure classloader
        return new HierarchicalClassLoaderStructure(workerExtensionSpec)
                .withChild(gradleApiFilter)
                .withChild(userSpec);
    }

    public ClassLoaderStructure getInProcessClassLoaderStructure(final Iterable<File> additionalClasspath, Class<?>... classes) {

            new HierarchicalClassLoaderStructure(classLoaderRegistry.getGradleWorkerExtensionSpec())
                .withChild(getMinimalGradleFilter())
                .withChild(targetGroovyClasspath)
                .withChild(gradleAndUserFilter)
                .withChild(compilerClasspath);

        return new DaemonForkOptionsBuilder(forkOptionsFactory)
            .javaForkOptions(javaForkOptions)

        HierarchicalClassLoaderStructure classLoaderStructure = new HierarchicalClassLoaderStructure(classLoaderRegistry.getGradleWorkerExtensionSpec())
                .withChild(getScalaFilterSpec())
                .withChild(new VisitableURLClassLoader.Spec("compiler", compilerClasspath.getAsURLs()));

        return new DaemonForkOptionsBuilder(forkOptionsFactory)
            .javaForkOptions(javaForkOptions)

        this.self = self;
        this.parent = parent;
    }

    public HierarchicalClassLoaderStructure withChild(ClassLoaderSpec spec) {
        HierarchicalClassLoaderStructure childNode = new HierarchicalClassLoaderStructure(spec, this);
        return childNode;
    }

    @Override
    public ClassLoaderSpec getSpec() {

    def "can serialize and deserialize a classloader structure"() {
        def classLoaderStructure = new HierarchicalClassLoaderStructure(filteringClassloaderSpec())
                .withChild(visitableUrlClassloaderSpec())

        when:
        serializer.write(encoder, classLoaderStructure)
        encoder.flush()

        and:

        return new VisitableURLClassLoader.Spec("test", urls)
    }

    def classLoaderStructure() {
        return new HierarchicalClassLoaderStructure(filteringClassloaderSpec())
                .withChild(visitableUrlClassloaderSpec())
    }

    def flatClassLoaderStructure() {
        return new FlatClassLoaderStructure(visitableUrlClassloaderSpec())
    }

        def includedSelector = invocations[0].taskSelectors[0]

        when:
        withBuild { BuildLauncher launcher ->
            launcher.forLaunchables(includedSelector)
        }

        then:
        thrown(BuildException)

        when:
        withBuild { BuildLauncher launcher ->
            launcher.forLaunchables(includedTask)
        }

        then:

        when:
        file("gradle.properties") << "org.gradle.workers.max=12"
        def result = withBuild()

        then:
        result.standardOutput.contains("max workers: 12")
    }

    def "can specify options using command-line arguments"() {
        when:
        def result = withBuild { BuildLauncher launcher ->
            launcher.withArguments("--max-workers", "12")
        }

        then:

        TaskSelector selectorT2 = model.taskSelectors.find { it.name == 't2' }
        def result = withBuild { BuildLauncher it ->
            it.forLaunchables(selectorT1, selectorT2)
        }
        then:
        result.result.assertTasksExecutedInOrder(':t1', ':b:c:t1', ':b:t2', ':b:c:t2')

        when:
        result = withBuild { BuildLauncher it ->
            it.forLaunchables(selectorT2, selectorT1)
        }