NuSOAP client accepting XML

Could someone point me to an example/tutorial of setting 
up a client (using wsdl) where the body of the soap envelope 
will contain (only) a XML document.  I can parse the XML 
document well and fine.  I'm just having a difficult time visualising 
how to set up such a NuSOAP client (using wsdl).

thnx,
Chris



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