added debug when parsing fails

core/src/main/java/org/jclouds/xml/internal/JAXBParser.java

@@ -81,7 +81,7 @@ public class JAXBParser implements XMLParser {
          Unmarshaller unmarshaller = context.createUnmarshaller();
          return (T) unmarshaller.unmarshal(reader);
       } catch (Exception ex) {
-         throw new IOException("Could not unmarshall document", ex);
+         throw new IOException("Could not unmarshall document into type: " + type.getSimpleName() + "\n" + xml, ex);
       }
    }
 }