public void setAssetModelExternalId(String assetModelExternalId) {
        this.assetModelExternalId = assetModelExternalId;
    }
<p>
An external ID to assign to the asset model. The external ID must be unique within your Amazon Web Services
account. For more information, see <a
href="https://docs.aws.amazon.com/iot-sitewise/latest/userguide/object-ids.html#external-ids">Using external
IDs</a> in the <i>IoT SiteWise User Guide</i>.
</p>

@param assetModelExternalId
       An external ID to assign to the asset model. The external ID must be unique within your Amazon Web
       Services account. For more information, see <a
       href="https://docs.aws.amazon.com/iot-sitewise/latest/userguide/object-ids.html#external-ids">Using
       external IDs</a> in the <i>IoT SiteWise User Guide</i>.
aws-java-sdk-iotsitewise/src/main/java/com/amazonaws/services/iotsitewise/model/CreateAssetModelRequest.java