class DmrModelReference extends DmrModelObject implements ModelReference {

   @Override
   public PathAddress getValue()
   {
      if (value.hasDefined("_ref"))
      {
         return PathAddress.pathAddress(value.get("_ref").asString());
      }
      else
      {
         return null;
      }
   }

     DmrModelReference(ModelNode value);

}