// Allow null to be set on as the message payload...
payloadProxy.setNullSetPayloadHandling(NullPayloadHandling.NONE);
final String securityNS = config.getAttribute("securityNS", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd");
extractors.add(new UsernameTokenExtractor(securityNS));
extractors.add(new BinarySecurityTokenExtractor(securityNS));
}