public String getMessageId() {
        return this.messageId;
    }
<p>
An attribute containing the <code>MessageId</code> of the message sent to the queue. For more information, see <a
href
="https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-queue-message-identifiers.html"
>Queue and Message Identifiers</a> in the <i>Amazon SQS Developer Guide</i>.
</p>

@return An attribute containing the <code>MessageId</code> of the message sent to the queue. For more
        information, see <a href=
        "https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-queue-message-identifiers.html"
        >Queue and Message Identifiers</a> in the <i>Amazon SQS Developer Guide</i>.
aws-java-sdk-sqs/src/main/java/com/amazonaws/services/sqs/model/SendMessageResult.java