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)));

        @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)))
    }

        @Override
        public FileCollection getFiles() {
            return files;
        }
    }

    interface OutputVisitor {
        default void visitOutputProperty(
            String propertyName,
            TreeType type,
            OutputFileValueSupplier value
        ) {}

        default void visitLocalState(File localStateRoot) {}

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

        }

        private void visitOutputDir(OutputVisitor visitor, File workspace, String propertyName) {
            File dir = new File(workspace, propertyName);
            visitor.visitOutputProperty(propertyName, TreeType.DIRECTORY, OutputFileValueSupplier.fromStatic(dir, fileCollectionFactory.fixed(dir)));
        }
    }

    private class DependencyAccessorUnitOfWork extends AbstractAccessorUnitOfWork {

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

        @Override
        public Object loadAlreadyProducedOutput(File workspace) {