Description Denise Smith 2011-08-04 16:01:26 EDT

In JSON a document can look like this 
{"address"
  {"street":"theStreet",
  "city":"theCity"
  }
}

Or it can exist with no root (in this case no "address")
 {"street":"theStreet",
  "city":"theCity"
  }

We need to be able to unmarshal this.  Since we'll need to provide the class to unmarshal to the object returned will be a JAXBElement (see that JAXBUnmarshaller.unmarshal(Source) returns a JAXBElement).  In this case the QName on the JAXBElement will have an "" local name.  In the marshal case if a QName on a JAXBElement has an "" local name we will treat it as not having a root element.