work.visitOutputs(context.getWorkspace(), new UnitOfWork.OutputVisitor() {
            @Override
            public void visitOutputProperty(String propertyName, TreeType type, UnitOfWork.OutputFileValueSupplier value) {
                builder.put(propertyName, FileSystemSnapshot.EMPTY);
            }
        });
        return builder.build();
    }

        File outputDir = getOutputDir(workspace);
        File resultsFile = getResultsFile(workspace);
        visitor.visitOutputProperty(OUTPUT_DIRECTORY_PROPERTY_NAME, DIRECTORY,
            OutputFileValueSupplier.fromStatic(outputDir, fileCollectionFactory.fixed(outputDir)));
        visitor.visitOutputProperty(RESULTS_FILE_PROPERTY_NAME, FILE,
            OutputFileValueSupplier.fromStatic(resultsFile, fileCollectionFactory.fixed(resultsFile)));

        Set<File> filesToDelete = new HashSet<>();
        work.visitOutputs(context.getWorkspace(), new UnitOfWork.OutputVisitor() {
            @Override
            public void visitOutputProperty(String propertyName, TreeType type, UnitOfWork.OutputFileValueSupplier value) {
                Streams.stream(value.getFiles())
                    .filter(cleanupRegistry::isOutputOwnedByBuild)

        OutputFileValueSupplier instrumentedOutputValue = OutputFileValueSupplier.fromStatic(instrumentedOutput, fileCollectionFactory.fixed(instrumentedOutput));
        visitor.visitOutputProperty("instrumentedOutput", TreeType.DIRECTORY, instrumentedOutputValue);
    }

    @Override
    public WorkOutput execute(ExecutionRequest executionRequest) {
        File workspace = executionRequest.getWorkspace();

        then:
        result == delegateResult

        _ * work.shouldCleanupStaleOutputs() >> true
        _ * work.visitOutputs(_) { UnitOfWork.OutputVisitor visitor ->
            visitor.visitOutputProperty("output", TreeType.FILE, UnitOfWork.OutputFileValueSupplier.fromStatic(target, TestFiles.fixed(target)))
        }

        _ * cleanupRegistry.isOutputOwnedByBuild(target) >> ownedByBuild

        @Override
        public void visitOutputTrees(CacheableTreeVisitor visitor) {
            work.visitOutputs(workspace, new UnitOfWork.OutputVisitor() {
                @Override
                public void visitOutputProperty(String propertyName, TreeType type, UnitOfWork.OutputFileValueSupplier value) {
                    visitor.visitOutputTree(propertyName, type, value.getValue());
                }
            });
        }

        val sourcesOutputDir = getSourcesOutputDir(workspace)
        val classesOutputDir = getClassesOutputDir(workspace)
        visitor.visitOutputProperty(SOURCES_OUTPUT_PROPERTY, DIRECTORY, OutputFileValueSupplier.fromStatic(sourcesOutputDir, fileCollectionFactory.fixed(sourcesOutputDir)))
        visitor.visitOutputProperty(CLASSES_OUTPUT_PROPERTY, DIRECTORY, OutputFileValueSupplier.fromStatic(classesOutputDir, fileCollectionFactory.fixed(classesOutputDir)))
    }

        TaskProperties taskProperties = context.getTaskProperties();
        for (OutputFilePropertySpec property : taskProperties.getOutputFileProperties()) {
            try {
                visitor.visitOutputProperty(
                    property.getPropertyName(),
                    property.getOutputType(),
                    OutputFileValueSupplier.fromSupplier(property::getOutputFile, property.getPropertyFiles())

            File metadataDir = metadataDir(workspace);
            OutputFileValueSupplier metadataDirValue = OutputFileValueSupplier.fromStatic(metadataDir, fileCollectionFactory.fixed(metadataDir));
            visitor.visitOutputProperty("metadataDir", TreeType.DIRECTORY, metadataDirValue);
        }

        @Override
        public Object loadAlreadyProducedOutput(File workspace) {