public VoiceMessageContent withCallInstructionsMessage(CallInstructionsMessageType callInstructionsMessage) {
        setCallInstructionsMessage(callInstructionsMessage);
        return this;
    }
@param callInstructionsMessage
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-pinpointsmsvoice/src/main/java/com/amazonaws/services/pinpointsmsvoice/model/VoiceMessageContent.java