I was writing a WSDL-first SOAP 1.1 service (server) using Apache CXF.
I needed to directly access the XML DOM of the SOAP Header and Body, so I did not want to use
the standard JAXB data binding. My solution was to implement
a Provider using message mode. However,
retrieving the SOAPAction inside the Provider’s invoke(SOAPMessage msg) method
was not intuitive to me.