new File(getParameters().getOutputDir(), "finished").createNewFile();
            }
        """
        return workerClass
    }

    WorkActionClass getBlockingWorkActionThatCreatesFiles(String url) {
        def workerClass = getWorkActionThatCreatesFiles("BlockingWorkAction")
        workerClass.imports += ["java.net.URL"]
        workerClass.action += """
            try {