public void setRegistrationArn(String registrationArn) {
        this.registrationArn = registrationArn;
    }
<p>
The Amazon Resource Name (ARN) for the registration.
</p>

@param registrationArn
       The Amazon Resource Name (ARN) for the registration.
aws-java-sdk-pinpointsmsvoicev2/src/main/java/com/amazonaws/services/pinpointsmsvoicev2/model/CreateRegistrationResult.java