public PackageDetails withLastUpdatedAt(java.util.Date lastUpdatedAt) {
        setLastUpdatedAt(lastUpdatedAt);
        return this;
    }
<p>
Date and time when the package was last updated.
</p>

@param lastUpdatedAt
       Date and time when the package was last updated.
@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/PackageDetails.java