docs: private RuleModel updateMethodCall(RuleModel model) {
  
          for (int i = 0; i < model.rhs.length; i++) {
              if (model.rhs[i] instanceof ActionCallMethod) {
                  ActionCallMethod action = (ActionCallMethod) model.rhs[i];
                  // Check if method name is filled, if not this was made with an older Guvnor version
                  if (action.getMethodName() == null || "".equals(action.getMethodName())) {
                      if (action.getFieldValues() != null && action.getFieldValues().length >= 1) {
                          action.setMethodName(action.getFieldValues()[0].getField());
  
                          action.setFieldValues(new ActionFieldValue[0]);
                          action.setState(ActionCallMethod.TYPE_DEFINED);
                      }
                  }
              }
          }
  
          return model;
      }