public void setUpdateDate(java.util.Date updateDate) {
        this.updateDate = updateDate;
    }
<p>
Date and time when the Auto-Tune options were last updated for the domain.
</p>

@param updateDate
       Date and time when the Auto-Tune options were last updated for the domain.
aws-java-sdk-opensearch/src/main/java/com/amazonaws/services/opensearch/model/AutoTuneStatus.java