title: Adding a new optional element in wsdl and not generate the client code using cxf throws unmarshall exception
body: <p>We have shared web service which is used by multiple clients, i added a new optional element in WSDL for one of the client. When other clients try to access the web service using the existing client code, it breaks and throws an unmarshall exception. It looks for the newly added optional element. </p>
  
  <p>Client code was generated using Apache CXF 2.5.8 </p>