task createOutput {
                def outputFile = file('build/output.txt')
                def inputFile = file('input.txt')
                inputs.file inputFile
                inputs.file 'unrelated-input.txt'
                outputs.file outputFile
                outputs.cacheIf { true }
                doLast {
                    if (!outputFile.exists() || outputFile.text != inputFile.text) {

                public File getOutputFile() {
                    return outputFile;
                }

                public void setOutputFile(File outputFile) {
                    this.outputFile = outputFile;
                }

                @Nested
                public Action<File> getAction() {
                    return action;
                }

                inputs.file(inputFile)
                    .withPropertyName("inputFile")
                def outputFile = project.layout.buildDirectory.file("output.txt")
                outputs.file(outputFile)
                    .withPropertyName("outputFile")
                doLast {
                    outputFile.get().asFile.text = inputFile.text
                }
            }
        """)

            task customFileTask {
                ext.outputFile = file('customFile-1.0-docs.html')
                def outputFile = ext.outputFile
                doLast {
                    outputFile << '<html/>'
                }
            }

            task regularFileTask {
                ext.outputFile = project.objects.fileProperty()
                outputs.file(outputFile)

                FileCollection sources

                @OutputFile
                File outputFile

                public TaskWithInputs() {
                    sources = project.files()
                }

                @TaskAction
                void doSomething() {
                    outputFile.withWriter { writer ->
                        sources.each { writer.println it }

                @TaskAction
                void doTask() {
                    File outputFile = getOutputDir().get().asFile
                    outputFile.deleteDir()
                    outputFile.mkdirs()
                    for (int i = 0; i < getInputCount().get(); i++) {
                        new File(outputFile, i.toString()).mkdirs()
                    }
                }
            }

                output = layout.buildDirectory.file("out.txt")
            }
        """
        def outputFile = file("build/out.txt")

        when:
        configurationCacheRun "a"

        then:
        result.assertTasksExecutedAndNotSkipped(":a")
        outputFile.assertIsFile()

        when:
        configurationCacheRun "a"

        then:

    }

    public static class TaskWithOutputFile extends TaskWithAction {
        File outputFile;

        @Inject
        public TaskWithOutputFile(File outputFile) {
            this.outputFile = outputFile;
        }

        @OutputFile
        public File getOutputFile() {
            return outputFile;
        }
    }

    public static class TaskWithOutputFiles extends TaskWithAction {

                        File outputFile = new File(outputDirectory.get().asFile, change.normalizedPath)
                        if (change.changeType == ChangeType.REMOVED) {
                            outputFile.delete()
                        } else {
                            if (change.file.file) {
                                outputFile.parentFile.mkdirs()

                FileCollection sources

                @OutputFile
                File outputFile

                public TaskWithInputs() {
                    sources = project.files()
                }

                @TaskAction
                void doSomething() {
                    outputFile.withWriter { writer ->
                        sources.each { writer.println it }