public String getMD5OfMessageSystemAttributes() {
        return this.mD5OfMessageSystemAttributes;
    }
<p>
An MD5 digest of the non-URL-encoded message system attribute string. You can use this attribute to verify that
Amazon SQS received the message correctly. Amazon SQS URL-decodes the message before creating the MD5 digest.
</p>

@return An MD5 digest of the non-URL-encoded message system attribute string. You can use this attribute to
        verify that Amazon SQS received the message correctly. Amazon SQS URL-decodes the message before creating
        the MD5 digest.
aws-java-sdk-sqs/src/main/java/com/amazonaws/services/sqs/model/SendMessageResult.java