def sourceDir = "src"
        file(sourceDir).createDir()
        def outputDir = "build/output"

        buildFile """
            task firstTask {
                inputs.dir("${sourceDir}")
                def outputDir = file("${outputDir}")
                outputs.dir(outputDir)
                doLast {
                    new File(outputDir, "source").text = "fixed"
                }
            }

        touch(task.outputDirs.get(0).getParentFile())

        when:
        execute(task)

        then:
        def e = thrown WorkValidationException
        validateException(task, e, cannotWriteToDir {
            property('outputDirs')
                .dir(task.outputDirs[0])
                .ancestorIsNotDirectory(task.outputDirs[0].parentFile)
                .includeLink()

	externalIP string, outputDir string, out io.Writer,
) error {
	if err := os.MkdirAll(outputDir, filePerms); err != nil {
		return err
	}
	var (
		err         error
		proxyConfig *meshconfig.ProxyConfig
	)
	revision := kubeClient.Revision()
	if proxyConfig, err = createMeshConfig(kubeClient, wg, istioNamespace, clusterID, outputDir, revision); err != nil {
		return err
	}

        1 * visitor.visitOutputFileProperty('outputFile', false, { it.call().path == 'output' }, OutputFilePropertyType.FILE)
        1 * visitor.visitOutputFileProperty('bean.outputDir', false, { it.call().path == 'outputDir' }, OutputFilePropertyType.DIRECTORY)

        1 * visitor.visitDestroyableProperty({ it.call().path == 'destroyed' })

        1 * visitor.visitLocalStateProperty({ it.call().path == 'localState' })

        def projectName = args[0]
        def outputDir = new File(args[1])

        JavaTestProjectGenerator project = JavaTestProjectGenerator.values().find {it.projectName == projectName }
        if (project == null) {
            throw new IllegalArgumentException("Project not defined: $projectName")
        }
        def projectDir = new File(outputDir, projectName)

    @Override
    public void visitOutputs(File workspace, OutputVisitor visitor) {
        File outputDir = getOutputDir(workspace);
        File resultsFile = getResultsFile(workspace);
        visitor.visitOutputProperty(OUTPUT_DIRECTORY_PROPERTY_NAME, DIRECTORY,
            OutputFileValueSupplier.fromStatic(outputDir, fileCollectionFactory.fixed(outputDir)));
        visitor.visitOutputProperty(RESULTS_FILE_PROPERTY_NAME, FILE,

    }

    def "generates -s option"() {
        def outputDir = new File("build/generated-sources")
        spec.compileOptions.annotationProcessorGeneratedSourcesDirectory = outputDir

        expect:
        builder.build() == ["-g", "-sourcepath", "", "-proc:none", "-s", outputDir.path, USE_UNSHARED_COMPILER_TABLE_OPTION, "-classpath", ""]
    }

[source,kotlin]
----
tasks.compileJava {
    // Modify the task behavior
    doLast {
        val outputDir = File("$buildDir/compiledClasses")
        outputDir.mkdirs()

        val compiledFiles = sourceSets["main"].output.files
        compiledFiles.forEach { compiledFile ->
            val destinationFile = File(outputDir, compiledFile.name)
            compiledFile.copyTo(destinationFile, true)
        }

    }

    def "wrong output file type registered via TaskOutputs.#method is not allowed (files)"() {
        enableProblemsApiCheck()
        expectReindentedValidationMessage()
        def outputDir = file("output-dir")
        outputDir.createDir()
        buildFile << """
            task test {
                outputs.${method}({ "$path" }) withPropertyName "output"
                doLast {}
            }
        """

                        return "good";
                    }
                }

                @OutputDirectory
                private File getOutputDir() {
                    return new File("outputDir");
                }

                @TaskAction
                public void doStuff() { }
            }
        """

        expect:
        assertValidationFailsWith([