public PackageVersionHistory withCreatedAt(java.util.Date createdAt) {
        setCreatedAt(createdAt);
        return this;
    }
<p>
Timestamp which tells creation time of the package version.
</p>

@param createdAt
       Timestamp which tells creation time of the package version.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-elasticsearch/src/main/java/com/amazonaws/services/elasticsearch/model/PackageVersionHistory.java