code: public java.util.List<String> getNotificationARNs() {
          if (notificationARNs == null) {
              notificationARNs = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return notificationARNs;
      }
docs: <p>
  SNS topic ARNs to which stack related events are published.
  </p>
  
  @return SNS topic ARNs to which stack related events are published.