public String getTopicArn() {
        return this.topicArn;
    }
The Amazon Resource Name (ARN) of the Amazon SNS topic that you want to publish events to.

@return The Amazon Resource Name (ARN) of the Amazon SNS topic that you want to publish events to.
aws-java-sdk-pinpointsmsvoice/src/main/java/com/amazonaws/services/pinpointsmsvoice/model/SnsDestination.java