public String getAssetId() {
        return this.assetId;
    }
<p>
The ID of the asset. This can be either the actual ID in UUID format, or else <code>externalId:</code> followed
by the external ID, if it has one. For more information, see <a
href="https://docs.aws.amazon.com/iot-sitewise/latest/userguide/object-ids.html#external-id-references"
>Referencing objects with external IDs</a> in the <i>IoT SiteWise User Guide</i>.
</p>

@return The ID of the asset. This can be either the actual ID in UUID format, or else <code>externalId:</code>
        followed by the external ID, if it has one. For more information, see <a
        href="https://docs.aws.amazon.com/iot-sitewise/latest/userguide/object-ids.html#external-id-references"
        >Referencing objects with external IDs</a> in the <i>IoT SiteWise User Guide</i>.
aws-java-sdk-iotsitewise/src/main/java/com/amazonaws/services/iotsitewise/model/ListAssetPropertiesRequest.java