Unmarshaller Decorator for JAXBXmlTypeProvider doesn't work

In the JAXBXmlTypeProvider, the readFrom() method doesn't invoke the decorateUnmarshaller() method, that cause the @XmlType classes which have been generated by XJC can't use "Decorator" feature for Unmarshaller.

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Below is source code pasted from JAXBXmlTypeProvider:

public Object readFrom(Class<Object> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException
{
try
{
JAXBContext jaxb = findJAXBContext(type, annotations, mediaType, true);
Unmarshaller unmarshaller = jaxb.createUnmarshaller();
if (suppressExpandEntityExpansion())

{ unmarshaller = new ExternalEntityUnmarshaller(unmarshaller); }

Object obj = unmarshaller.unmarshal(entityStream);
if (obj instanceof JAXBElement)

{ JAXBElement element = (JAXBElement) obj; return element.getValue(); }

else

{ return obj; }

}
catch (JAXBException e)

{ throw new JAXBUnmarshalException(e); }

}