public String getClientToken() {
        return this.clientToken;
    }
<p>
A unique identifier that you provide to ensure idempotency. If you retry a request that completed successfully
using the same client token and the same parameters, the retry succeeds without performing any further actions.
If you retry a successful request using the same client token, but one or more of the parameters are different,
the retry fails.
</p>

@return A unique identifier that you provide to ensure idempotency. If you retry a request that completed
        successfully using the same client token and the same parameters, the retry succeeds without performing
        any further actions. If you retry a successful request using the same client token, but one or more of
        the parameters are different, the retry fails.
aws-java-sdk-appregistry/src/main/java/com/amazonaws/services/appregistry/model/CreateApplicationRequest.java