val output = outputDirectory.resolve(entry.name)
        if (!output.canonicalPath.startsWith(outputDirectoryCanonicalPath)) {
            throw ZipException("Zip entry '${entry.name}' is outside of the output directory")
        }
        if (entry.isDirectory) {
            output.mkdirs()
        } else {
            output.parentFile.mkdirs()

     */
    DISABLE_CONDITION_SATISFIED,

    /**
     * The work has no outputs declared.
     */
    NO_OUTPUTS_DECLARED,

    /**
     * Work has declared output that is not cacheable.
     *
     * Reasons for non-cacheable outputs:
     * <ul>
     *     <li>an output contains a file tree,</li>
     *     <li>an output is not tracked.</li>
     * </ul>
     */
    NON_CACHEABLE_OUTPUT,

    /**

For the very same reason using `outputs.upToDateWhen` is discouraged and should be replaced by properly declaring the task's inputs.

=== Overlapping outputs

You already saw that <<build_cache_concepts.adoc#concepts_overlapping_outputs,overlapping outputs are a problem for task output caching>>.
When you add new tasks to your build or re-configure built-in tasks make sure you do not create overlapping outputs for cacheable tasks.

            hiddenNonBuildable = true;
            return;
        }
        StyledTextOutput output = builder.getOutput();
        GraphRenderer renderer = new GraphRenderer(output);
        renderer.visit(output1 -> {
            output1.withStyle(Identifier).text(component.getName());
            output1.withStyle(Description).text(" - Components that depend on " + component.getDisplayName());
        }, true);

        def output = new File(outputDirectory, entry.name)
        if (!output.canonicalPath.startsWith(outputDirectoryCanonicalPath)) {
            throw new ZipException("Zip entry '${entry.name}' is outside of the output directory")
        }
        if (entry.isDirectory) {
            output.mkdirs()
        } else {
            output.parentFile.mkdirs()

    delete(layout.buildDirectory.file("outputs/1.txt"))
}
// end::removed-output[]

// tag::reverse[]
tasks.register<IncrementalReverseTask>("incrementalReverse") {
    inputDir = file("inputs")
    outputDir = layout.buildDirectory.dir("outputs")
    inputProperty = project.findProperty("taskInputProperty") as String? ?: "original"
}
// end::reverse[]

    }

    }

    def "does not clean up stale outputs for untracked tasks"() {
        def untrackedStaleFile = file("build/untracked/stale-output-file").createFile()
        def untrackedOutputFile = file("build/untracked/output.txt")
        def trackedStaleFile = file("build/tracked/stale-output-file").createFile()
        def trackedOutputFile = file("build/tracked/output.txt")

        buildFile("""

        inputDir = project.mkdir('inputs')
        outputDir = project.mkdir('outputs')
        prop = 'foo'
    }
"""
        file('inputs/file0.txt') << "inputFile0"
        file('inputs/file1.txt') << "inputFile1"
        file('inputs/file2.txt') << "inputFile2"

        file('outputs/file1.txt') << "outputFile1"
        file('outputs/file2.txt') << "outputFile2"
    }

                abstract Provider<FileSystemLocation> getInput()

                void transform(TransformOutputs outputs) {
                    def dir = input.get().asFile
                    assert dir.directory
                    println("transforming [\${dir.name}]")
                    outputs.file("\${dir.name}.size").text = 'ok'
                }
            }
        """
    }