public java.util.List<AlarmHistoryItem> getAlarmHistoryItems() {
        if (alarmHistoryItems == null) {
            alarmHistoryItems = new com.amazonaws.internal.SdkInternalList<AlarmHistoryItem>();
        }
        return alarmHistoryItems;
    }
<p>
The alarm histories, in JSON format.
</p>

@return The alarm histories, in JSON format.
aws-java-sdk-cloudwatch/src/main/java/com/amazonaws/services/cloudwatch/model/DescribeAlarmHistoryResult.java