docs: public DescribeEventSubscriptionsResult withEventSubscriptionsList(EventSubscription... eventSubscriptionsList) {
          if (this.eventSubscriptionsList == null) {
              setEventSubscriptionsList(new com.amazonaws.internal.SdkInternalList<EventSubscription>(eventSubscriptionsList.length));
          }
          for (EventSubscription ele : eventSubscriptionsList) {
              this.eventSubscriptionsList.add(ele);
          }
          return this;
      }