@Input
                String fileName = name + ".txt"

                @OutputFile
                File outputFile = new File(project.buildDir, name + "-output.txt")

                @TaskAction
                void generate() {
                    outputFile.text = message
                    localStateDir.mkdir()
                    def localStateFile = new File(localStateDir, fileName)

        storeResults(taskValidationProblems, params.getOutputFile());
    }


    private static void storeResults(List<Problem> problemMessages, RegularFileProperty outputFile) {
        if (outputFile.isPresent()) {
            File output = outputFile.get().getAsFile();
            try {
                //noinspection ResultOfMethodCallIgnored
                output.createNewFile();

	// day.
	Close() error

	// OutputFile returns the path on disk where OutputID is stored.
	//
	// It's only called after a successful get or put call so it doesn't need
	// to return an error; it's assumed that if the previous get or put succeeded,
	// it's already on disk.
	OutputFile(OutputID) string

	// FuzzDir returns where fuzz files are stored.
	FuzzDir() string
}

	return e, nil
}

func (c *ProgCache) noteOutputFile(o OutputID, diskPath string) {
	c.mu.Lock()
	defer c.mu.Unlock()
	c.outputFile[o] = diskPath
}

func (c *ProgCache) OutputFile(o OutputID) string {
	c.mu.Lock()
	defer c.mu.Unlock()
	return c.outputFile[o]
}

func (c *ProgCache) Put(a ActionID, file io.ReadSeeker) (_ OutputID, size int64, _ error) {
	// Compute output ID.
	h := sha256.New()

    @PathSensitive(PathSensitivity.RELATIVE)
    @InputDirectory
    abstract DirectoryProperty getClassDocbookDirectory();

    @OutputFile
    abstract RegularFileProperty getDestFile();

    @OutputFile
    abstract RegularFileProperty getLinksFile();

    @TaskAction
    def transform() {
        XIncludeAwareXmlProvider provider = new XIncludeAwareXmlProvider()

                task producer(type: Producer) {
                    outputFile = file("build/\${project.name}.jar")
                }
                artifacts."default" producer.outputFile
            }

            class Producer extends DefaultTask {
                @OutputFile
                final RegularFileProperty outputFile = project.objects.fileProperty()

                @TaskAction

            writeEnum(filePropertyType)
        }
    }
}


private
fun collectRegisteredOutputsOf(task: Task): List<RegisteredProperty.OutputFile> {

    val properties = mutableListOf<RegisteredProperty.OutputFile>()

    (task.outputs as TaskOutputsInternal).visitRegisteredProperties(object : PropertyVisitor {

        override fun visitOutputFileProperty(
            propertyName: String,

    final ListProperty<String> prop = project.objects.listProperty(String)

    @OutputFile
    final Property<RegularFile> outputFile = project.objects.fileProperty()

    @TaskAction
    void go() {
        outputFile.get().asFile.text = prop.get()
    }
}

task thing(type: SomeTask) {
    prop = ["value 1"]
    outputFile = layout.buildDirectory.file("out.txt")
    doFirst {
        prop.set(["broken"])

			vcopy.NodeCount = int(n)
			continue
		}
		switch t[0] {
		case '>':
			outputFile := t[1:]
			if outputFile == "" {
				i++
				if i >= len(args) {
					return nil, config{}, fmt.Errorf("unexpected end of line after >")
				}
				outputFile = args[i]
			}
			vcopy.Output = outputFile
		case '-':
			if t == "--cum" || t == "-cum" {
				vcopy.Sort = "cum"
				continue
			}

        installTask instanceof InstallExecutable
        installTask.executableFile.get().asFile == stripTask.outputFile.get().asFile
        installTask.installDirectory.get().asFile == projectDir.file("build/install/windows/debug")

        and:
        exeFileProp.get().asFile == stripTask.outputFile.get().asFile
        debugExeFileProp.get().asFile == installTask.installedExecutable.get().asFile