public void setLastUpdateDate(java.util.Date lastUpdateDate) {
        this.lastUpdateDate = lastUpdateDate;
    }
<p>
The date the asset model was last updated, in Unix epoch time.
</p>

@param lastUpdateDate
       The date the asset model was last updated, in Unix epoch time.
aws-java-sdk-iotsitewise/src/main/java/com/amazonaws/services/iotsitewise/model/AssetModelSummary.java