code: public DescribeEventSubscriptionsResult withEventSubscriptionsList(EventSubscription... eventSubscriptionsList) {
          if (this.eventSubscriptionsList == null) {
              setEventSubscriptionsList(new java.util.ArrayList<EventSubscription>(eventSubscriptionsList.length));
          }
          for (EventSubscription ele : eventSubscriptionsList) {
              this.eventSubscriptionsList.add(ele);
          }
          return this;
      }
docs: <p>
  A list of event subscriptions.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setEventSubscriptionsList(java.util.Collection)} or
  {@link #withEventSubscriptionsList(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param eventSubscriptionsList
  A list of event subscriptions.
  @return Returns a reference to this object so that method calls can be chained together.