/**
  * Retrieves representation of an instance of com.rajtech.resources.StatusResource
  *
  * @return an instance of javax.ws.rs.core.Response
  */
 @GET
 @Produces("application/json")
 public List<Status> getStatus() {
   status = sdi.listStatus();
   if (status.isEmpty()) return null;
   else return status;
 }