}

    @Override
    public DefaultWorkResult run(TransportableActionExecutionSpec spec) {
        try {
            try (WorkerProjectServices internalServices = new WorkerProjectServices(spec.getBaseDir(), spec.getProjectCacheDir(), this.internalServices)) {
                RequestHandler<TransportableActionExecutionSpec, DefaultWorkResult> worker = getIsolatedClassloaderWorker(spec.getClassLoaderStructure(), internalServices);

     *
     * @return project's cache dir, or null if the default location is to be used.
     */
    @Nullable
    public File getProjectCacheDir() {
        return projectCacheDir;
    }

    /**
     * Creates a {@code StartParameter} with default values. This is roughly equivalent to running Gradle on the command-line with no arguments.
     */