@PathSensitive(PathSensitivity.NONE)
                File inputFile

                @OutputFiles
                Map<String, File> outputFiles

                @TaskAction
                void doSomething() {
                    outputFiles.each { String key, File outputFile ->
                        outputFile.text = key
                    }
                }
            }
        """

        List<ExecutionOutput> outputFiles = new ArrayList<>();
        for (File executionDir : getOutputsDir().listFiles()) {
            if (executionDir.isDirectory()) {
                outputFiles.add(new ExecutionOutput(new File(executionDir, "output.txt"), new File(executionDir, "error.txt")));
            }
        }
        return outputFiles;
    }

    public List<ExecutionResult> succeeds() {

                @Input
                String message = "Hello World"
                @OutputFile
                File outputFile = new File(temporaryDir, "output.txt")

                @TaskAction
                void generate() {
                    outputFile.text = message
                }
            }

            @DisableCachingByDefault

import org.gradle.api.tasks.Nested;
import org.gradle.api.tasks.Optional;
import org.gradle.api.tasks.OutputDirectories;
import org.gradle.api.tasks.OutputDirectory;
import org.gradle.api.tasks.OutputFile;
import org.gradle.api.tasks.OutputFiles;
import org.gradle.api.tasks.PathSensitive;
import org.gradle.api.tasks.SkipWhenEmpty;
import org.gradle.api.tasks.UntrackedTask;
import org.gradle.api.tasks.options.OptionValues;

    final inputFiles = [file: [inputFile], dir: [inputDir], missingFile: [missingInputFile]]
    final outputFiles = [file: outputFile, missingFile: missingOutputFile]
    final outputDirs = [emptyDir: emptyOutputDir, dir: outputDir, missingDir: missingOutputDir]
    final createFiles = [outputFile, outputDirFile, outputDirFile2] as Set

    def unitOfWork = builder.build()

                    def buildDirectory = projectLayout.buildDirectory
                    inputFiles.files.each { File inputFile ->
                        def outputFile = buildDirectory.file(inputFile.name + ".out").get().asFile
                        GFileUtils.copyFile(inputFile, outputFile)
                    }
                }
            }
            allprojects {
                apply plugin: 'java-library'

            if (backendErrors.isNotEmpty()) {
                return KaCompilationResult.Failure(backendErrors)
            }

            val outputFiles = state.factory.asList().map(::KaCompiledFileForOutputFile)
            return KaCompilationResult.Success(outputFiles, capturedValues = emptyList())
        } finally {
            state.destroy()
        }
    }

            ClassPath cp = moduleRegistry.getExternalModule(module.getModuleName()).getImplementationClasspath();
            outputFiles.addAll(extractor.apply(cp));
        }

        return outputFiles.build();
    }

    private static class AdditionalClasspath {

        public final List<TestFrameworkDistributionModule> applicationClasspath;

        }
    }

    private fun dumpClassFiles(outputFiles: List<KaCompiledFile>): String {
        val classes = outputFiles
            .filter { it.path.endsWith(".class", ignoreCase = true) }
            .also { check(it.isNotEmpty()) }
            .sortedBy { it.path }
            .map { outputFile ->
                val classReader = ClassReader(outputFile.content)

            }
        """.stripIndent()


        def outputFile = file('build/output.txt')
        outputFile.text = "pre-existing"
        file('input.txt').text = 'input file'

        expect:
        fails('myTask')
        failureDescriptionContains(cannotCreateRootOfFileTree {
            property('output')
                .dir(outputFile)
                .includeLink()
        })