public void configure(CallbackUtilities cus) throws Exception {
this.cus = cus;
bshEvaluator = new BshEvaluator();
bshEvaluator.configure(cus);
pythonEvaluator = new PythonEvaluator();
pythonEvaluator.configure(cus);
jsEvaluator = new WorkflowJavaScriptEvaluator();
jsEvaluator.configure(cus);
}