docs: public CallActivityBehavior createCallActivityBehavior(CallActivity callActivity) {
          String expressionRegex = "\\$+\\{+.+\\}";
  
          CallActivityBehavior callActivityBehaviour = null;
          if (StringUtils.isNotEmpty(callActivity.getCalledElement()) && callActivity.getCalledElement().matches(expressionRegex)) {
              callActivityBehaviour = new CallActivityBehavior(expressionManager.createExpression(callActivity.getCalledElement()),
                                                               callActivity.getMapExceptions());
          } else {
              callActivityBehaviour = new CallActivityBehavior(callActivity.getCalledElement(),
                                                               callActivity.getMapExceptions());
          }
  
          return callActivityBehaviour;
      }