public AutoTuneStatus withCreationDate(java.util.Date creationDate) {
        setCreationDate(creationDate);
        return this;
    }
<p>
Date and time when Auto-Tune was enabled for the domain.
</p>

@param creationDate
       Date and time when Auto-Tune was enabled for the domain.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-opensearch/src/main/java/com/amazonaws/services/opensearch/model/AutoTuneStatus.java