code: public ResponseBuilder initialize(final Resource resource) {
  
          if (MISSING_RESOURCE.equals(resource)) {
              throw new NotFoundException();
          } else if (DELETED_RESOURCE.equals(resource)) {
              throw new ClientErrorException(GONE);
          }
  
          setResource(resource);
          return status(NO_CONTENT);
      }
docs: Initialize the request handler.
  @param resource the Trellis resource
  @return a response builder