Enhance WSDL to Java Generation to Include set* for List Data

[romeara]

The WSDL-to-Java algorithm from CXF currently does not, by default, generate set methods for List fields. It would improve API clarity and usability to enhance the operation to generate these methods.

One possible method to add this would be a JAXB2 plug-in. There is documentation about these plug-ins here

We'll also have to ensure that no existing method signatures are changed by adding a plug-in, to preserve backwards compatibility