code: public static Tag status(ContainerResponse response) {
          /* In case there is no response we are dealing with an unmapped exception. */
          return (response != null)
                  ? Tag.of("status", Integer.toString(response.getStatus()))
                  : STATUS_SERVER_ERROR;
      }
docs: Creates a {@code status} tag based on the status of the given {@code response}.
  @param response the container response
  @return the status tag derived from the status of the response