public String getClientToken() {
        return this.clientToken;
    }
<p>
Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. If you don't specify
a client token, a randomly generated token is used for the request to ensure idempotency.
</p>

@return Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. If you don't
        specify a client token, a randomly generated token is used for the request to ensure idempotency.
aws-java-sdk-pinpointsmsvoicev2/src/main/java/com/amazonaws/services/pinpointsmsvoicev2/model/RequestPhoneNumberRequest.java