public Long getCompatibleNamespaceVersion() {
        return this.compatibleNamespaceVersion;
    }
<p>
The version of the user's namespace. Defaults to the latest version of the user's namespace.
</p>
<p>
If no value is specified, the latest version is used by default.
</p>

@return The version of the user's namespace. Defaults to the latest version of the user's namespace.</p>
        <p>
        If no value is specified, the latest version is used by default.
aws-java-sdk-iotthingsgraph/src/main/java/com/amazonaws/services/iotthingsgraph/model/UpdateSystemTemplateRequest.java