public String getClientToken() {
        return this.clientToken;
    }
<p>
When included, if two identical requests are made with the same client token, Proton returns the environment
template version that the first request created.
</p>

@return When included, if two identical requests are made with the same client token, Proton returns the
        environment template version that the first request created.
aws-java-sdk-proton/src/main/java/com/amazonaws/services/proton/model/CreateEnvironmentTemplateVersionRequest.java