public String getActionPrefix() {
        return this.actionPrefix;
    }
<p>
Use this parameter to filter the results of the operation to only those alarms that use a certain alarm action.
For example, you could specify the ARN of an SNS topic to find all alarms that send notifications to that topic.
</p>

@return Use this parameter to filter the results of the operation to only those alarms that use a certain alarm
        action. For example, you could specify the ARN of an SNS topic to find all alarms that send notifications
        to that topic.
aws-java-sdk-cloudwatch/src/main/java/com/amazonaws/services/cloudwatch/model/DescribeAlarmsRequest.java