BadTask() {
                    println("creating bad task")
                }
                @TaskAction
                void printIt() {
                    def outputFile = getOutputFile().get().asFile
                    outputFile.text = "bad"
                }
            }

            abstract class GoodTask extends DefaultTask {
                @OutputFile

                    doLast {
                        assert compileClasspathFiles == [projectAJavaDir.get().asFile] as Set
                        assert runtimeClasspathFiles == [] as Set
                        assert compileOnlyClasspathFiles == [projectAJarArchiveFile.get().asFile] as Set
                        assert implementationClasspathFiles == [] as Set
                    }
                }
            }

            if (hasCleaned) {
                return
            }
            logger.lifecycle("Cleaning up caches...")
            val homeDir = parameters.homeDir.get()

            homeDir.asFile.listFiles()?.filter { it.name.startsWith("distributions-") }?.forEach {
                val workerDir = homeDir.dir(it.name)
                cleanupDistributionCaches(workerDir, GradleVersion.version(parameters.gradleVersion.get()))

            }
        }
    }

    private
    fun recreateTaskDirectories() {
        recreate(temporaryDir)
        recreate(sourceCodeOutputDir.get().asFile)
        recreate(metadataOutputDir.get().asFile)
    }

    private
    fun IO.generateTypeSafeAccessorsFor(projectScriptPlugins: List<PrecompiledScriptPlugin>) {
        resolvePluginGraphOf(projectScriptPlugins)
            .groupBy(

            if (moduleBaseDir.exists()) {
                // Make sure artifacts do not pile up locally
                moduleBaseDir.deleteRecursively()
            }
        }

        doLast {
            localRepository.get().file("org/gradle/${baseName.get()}/maven-metadata.xml").asFile.apply {

    @TaskAction
    fun mergeInstrumentedSuperTypes() {
        val instrumentedClasses = findInstrumentedClasses()
        if (instrumentedClasses.isEmpty()) {
            instrumentedSuperTypes.asFile.get().delete()
            return
        }

        // Merge and find all transitive super types
        val superTypes = mergeSuperTypes()

fun Directory.parentOrRoot(): Directory = if (this.file("version.txt").asFile.exists()) {
    this
} else {
    val parent = dir("..")
    when {
        parent.file("version.txt").asFile.exists() -> parent
        this == parent -> throw IllegalStateException("Cannot find 'version.txt' file in root of repository")
        else -> parent.parentOrRoot()

                @Internal abstract RegularFileProperty getBar()

                @TaskAction
                void useIt() {
                    assert foo.asFile.get().name == "foo"
                    assert bar.asFile.get().name == "bar"
                }
            }
            tasks.register("mytask", MyTask) {
                def layout = project.layout

}

tasks.jar.configure {
    val classpath = resolveManifestClasspath.flatMap { configuration ->
        configuration.elements.map { classpathDependency ->
            classpathDependency.joinToString(" ") { it.asFile.name }
        }
    }
    manifest.attributes("Class-Path" to classpath)
    if (app.mainClassName.isPresent) {
        manifest.attributes("Main-Class" to app.mainClassName)
    }

// === Gradle Build ===
performanceTest.registerTestProject("gradleBuildCurrent", RemoteProject) {
    remoteUri = repoRoot(project).asFile.absolutePath
    ref = getBuildCommitId(project)
}

performanceTest.registerTestProject("gradleBuildBaseline", RemoteProject) {
    remoteUri = repoRoot(project).asFile.absolutePath
    // Remember to update accordingly when rebasing/squashing