title: Web service code created by CXF is not legal because of XMLGregorianCalendar?
body: <p>I have a WSDL and created a web service from it using CXF in Eclipse.  The execution went fine: no output in the console, I don't know if there is a log somewhere but I could not find one.  But in the service interface created, everywhere an XMLGregorianCalendar is used (as either parameter or return value), I get this error from Eclipse:</p>
  
  <blockquote>
    <p>Abstract class javax.xml.datatype.XMLGregorianCalendar cannot be used as a runtime class because it is not extended by a non abstract class which is suitable as a runtime class</p>
  </blockquote>
  
  <p>The use of XMLGregorialCalendar in the beans causes no problem, just in the interface.  The WSDL was originally created by the same environment (so I am assuming is OK).</p>
  
  <p>I have no idea what this error means!  Is it a bug in CXF, a setting I set wrong, or some code I need to add now that the skeleton is created?</p>