code: public DescribeAlarmHistoryResult withAlarmHistoryItems(AlarmHistoryItem... alarmHistoryItems) {
          if (this.alarmHistoryItems == null) {
              setAlarmHistoryItems(new com.amazonaws.internal.SdkInternalList<AlarmHistoryItem>(alarmHistoryItems.length));
          }
          for (AlarmHistoryItem ele : alarmHistoryItems) {
              this.alarmHistoryItems.add(ele);
          }
          return this;
      }
docs: <p>
  The alarm histories, in JSON format.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setAlarmHistoryItems(java.util.Collection)} or {@link #withAlarmHistoryItems(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param alarmHistoryItems
  The alarm histories, in JSON format.
  @return Returns a reference to this object so that method calls can be chained together.