OpenSAML user discussion

Hello,

Does anybody know how to send a SOAP message using SAML2?
I think you need to use a SOAPClient and on this new created SOAPClient you 
need to invoke the method send(java.net.URI endpointURI, SOAPMessageContext 
messageContext).
The problem I'm facing now is that I don't see a implementation of the 
interface SOAPMessageContext.
Am I right, or is there another way to do this?

Thanks,
Hans Wijnsouw