public void setId(String id) {
        this.id = id;
    }
<p>
The ID of the asset model property.
</p>
<ul>
<li>
<p>
If you are callling <a
href="https://docs.aws.amazon.com/iot-sitewise/latest/APIReference/API_UpdateAssetModel.html"
>UpdateAssetModel</a> to create a <i>new</i> property: You can specify its ID here, if desired. IoT SiteWise
automatically generates a unique ID for you, so this parameter is never required. However, if you prefer to
supply your own ID instead, you can specify it here in UUID format. If you specify your own ID, it must be
globally unique.
</p>
</li>
<li>
<p>
If you are calling UpdateAssetModel to modify an <i>existing</i> property: 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>
</li>
</ul>

@param id
       The ID of the asset model property.</p>
       <ul>
       <li>
       <p>
       If you are callling <a
       href="https://docs.aws.amazon.com/iot-sitewise/latest/APIReference/API_UpdateAssetModel.html"
       >UpdateAssetModel</a> to create a <i>new</i> property: You can specify its ID here, if desired. IoT
       SiteWise automatically generates a unique ID for you, so this parameter is never required. However, if you
       prefer to supply your own ID instead, you can specify it here in UUID format. If you specify your own ID,
       it must be globally unique.
       </p>
       </li>
       <li>
       <p>
       If you are calling UpdateAssetModel to modify an <i>existing</i> property: 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>
       </li>
aws-java-sdk-iotsitewise/src/main/java/com/amazonaws/services/iotsitewise/model/AssetModelProperty.java