public byte[] convertToXmlByteArray(
            RequestPaymentConfiguration requestPaymentConfiguration) {
        XmlWriter xml = new XmlWriter();
        xml.start("RequestPaymentConfiguration", "xmlns",
                Constants.XML_NAMESPACE);

        Payer payer = requestPaymentConfiguration.getPayer();
        if (payer != null) {
            XmlWriter payerDocumentElement = xml.start("Payer");
            payerDocumentElement.value(payer.toString());
            payerDocumentElement.end();
        }
        xml.end();
        return xml.getBytes();
    }
Converts the specified request payment configuration into an XML byte
array to send to Amazon S3.

Sample XML:
<RequestPaymentConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
		<Payer>Requester</Payer>
</RequestPaymentConfiguration>

@param requestPaymentConfiguration
           The request payment configuration request to convert..
@return The XML byte array representation.
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/transform/RequestPaymentConfigurationXmlFactory.java