code: public java.util.List<String> getNotificationEvents() {
          if (notificationEvents == null) {
              notificationEvents = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return notificationEvents;
      }
docs: <p>
  The different events for which you can receive notifications. These events include the following: All (events),
  InProgress, Success, TimedOut, Cancelled, Failed. To learn more about these events, see <a
  href="http://docs.aws.amazon.com/systems-manager/latest/userguide/rc-sns-notifications.html">Configuring Amazon
  SNS Notifications for Run Command</a> in the <i>AWS Systems Manager User Guide</i>.
  </p>
  
  @return The different events for which you can receive notifications. These events include the following: All
  (events), InProgress, Success, TimedOut, Cancelled, Failed. To learn more about these events, see <a
  href="http://docs.aws.amazon.com/systems-manager/latest/userguide/rc-sns-notifications.html">Configuring
  Amazon SNS Notifications for Run Command</a> in the <i>AWS Systems Manager User Guide</i>.
  @see NotificationEvent