public void setStartAt(java.util.Date startAt) {
        this.startAt = startAt;
    }
<p>
Specifies timestamp at which Auto-Tune maintenance schedule start.
</p>

@param startAt
       Specifies timestamp at which Auto-Tune maintenance schedule start.
aws-java-sdk-elasticsearch/src/main/java/com/amazonaws/services/elasticsearch/model/AutoTuneMaintenanceSchedule.java