public void setDestinationPhoneNumber(String destinationPhoneNumber) {
        this.destinationPhoneNumber = destinationPhoneNumber;
    }
The phone number that you want to send the voice message to.

@param destinationPhoneNumber
       The phone number that you want to send the voice message to.
aws-java-sdk-pinpointsmsvoice/src/main/java/com/amazonaws/services/pinpointsmsvoice/model/SendVoiceMessageRequest.java