@Input
                Thing thing

                @OutputFile
                RegularFile outputFile

                @TaskAction def go() {
                    outputFile.asFile.text = thing.name
                }
            }

            task a(type: ThingTask) {
                thing = objects.named(Thing, providers.systemProperty('name').getOrElse('a'))

                    })
                }

                @TaskAction
                void zipSources() {
                    ${server.callFromBuild("zipFileSnapshottingFinished")}
                    zipFile.get().asFile.text = "output"
                }
            }

            task srcZip(type: ZipSrc) {
                sources = rootProject.file("lib")
                zipFile = file("build/srcZip.zip")
            }

                @OutputFile
                abstract RegularFileProperty getOutputFile()

                @TaskAction
                void run() {
                    outputFile.get().asFile.text = inputFiles.files.collect { it.text }.join()
                }
            }

            def producer = tasks.register('producer', ConcatTask) {
                inputFiles.from(file("producer-input.txt"))

            selectHighestVersion()
        }
    }
}

fun readCapabilitiesFromJson() {
    val capabilitiesFile = repoRoot().file("gradle/dependency-management/capabilities.json").asFile
    val capabilities: List<CapabilitySpec> = readCapabilities(capabilitiesFile)
    capabilities.forEach {
        it.configure(dependencies.components, configurations)
    }
}

                @Inject abstract ArchiveOperations getArchiveOperations()

                @TaskAction
                void update() {
                    FileTree tree = archiveOperations.${archiveType}Tree(archive.asFile.get())
                    tree.visit(new EditingFileVisitor())
                }

                private final class EditingFileVisitor implements FileVisitor {
                    @Override

    override fun asArguments() = listOf("-DdeclaredSampleInputs=${autoTestedSamplesDir.asFile.absolutePath}")
}


internal
fun Project.createTestTask(name: String, executer: String, sourceSet: SourceSet, testType: TestType, extraConfig: Action<IntegrationTest>): TaskProvider<IntegrationTest> =

                @OutputFile
                abstract RegularFileProperty getOutputFile()

                @TaskAction
                void doSomething() {
                    outputFile.get().asFile.text = "executed"
                }
            }

            tasks.register("taskWithInputs", TaskWithInputs) {
                sources.set(file("inputDir"))
                outputFile.set(file("build/outputFile.txt"))

val output: Provider<RegularFile> = layout.buildDirectory.file("myOutput.txt")

// If you really need the java.io.File for a non lazy API
output.get().asFile

// Or a path for a lazy String based API
output.map { it.asFile.path }
----
======
[.multi-language-sample]
======
.build.gradle
[source,groovy]
----

                @InputArtifact
                abstract Provider<FileSystemLocation> getInputArtifact()

                void transform(TransformOutputs outputs) {
                    def input = inputArtifact.get().asFile
                    ${server.callFromBuild('size-transform')}
                    File output = outputs.file(input.name + parameters.suffix)
                    output.text = String.valueOf(input.length())
                }

        result.assertTasksExecuted(":compileJava", ":processResources", ":classes", ":jar", ":assemble")
        def classFile = file("build/classes/java/main/Thing.class")
        classFile.isFile()
        def jarFile = file("build/libs/somelib.jar")
        jarFile.isFile()

        when:
        configurationCacheRun "clean"

        then:
        assertStateStored()
        !file("build").exists()

        when: