@POST
 @Path("/class/{fullName}/attributes")
 public Response addAttributeToClass(@PathParam("fullName") String fullName, String json) {
   Clazz clazz = LomBusinessFacade.getInstance().getClass(fullName);
   if (clazz != null) {
     try {
       ObjectNode attributeJson = (ObjectNode) jsonNodeFromString(json);
       Attribute attribute = Attribute.attributeFromJson(attributeJson);
       attribute.setClassID(clazz.getId());
       attribute = LomBusinessFacade.getInstance().addAttribute(attribute);
       ResponseBuilderImpl builder = new ResponseBuilderImpl();
       builder.status(201);
       builder.entity(attribute.getJson().toString());
       return builder.build();
     } catch (Exception e) {
       return Response.notAcceptable(null).build();
     }
   }
   return Response.notAcceptable(null).build();
 }