public Long getValidatedNamespaceVersion() {
        return this.validatedNamespaceVersion;
    }
<p>
The namespace version against which the system was validated. Use this value in your system instance.
</p>

@return The namespace version against which the system was validated. Use this value in your system instance.
aws-java-sdk-iotthingsgraph/src/main/java/com/amazonaws/services/iotthingsgraph/model/SystemTemplateDescription.java