code: def error(self, status_code, request, message=None):
          
          status_code_text = HTTP_STATUS_CODES.get(status_code, 'http error')
          status_error_tag = status_code_text.lower().replace(' ', '_')
          custom_response_map = {
              404: self.make_error_response(
                  status_error_tag,
                  'The requested URL {} was not found on this service.'.format(
                      request.path
                  )
              ),
              400: self.make_error_response(status_error_tag, message),
              405: self.make_error_response(
                  status_error_tag,
                  'The requested URL {} was not allowed HTTP method {}.'.format(
                      request.path, request.method
                  )
              ),
          }
          return self._raw_response(
              status_code,
              custom_response_map.get(
                  status_code,
                  self.make_error_response(
                      status_error_tag, message or status_code_text
                  )
              )
          )
docs: Handle error response.
  
          :param int status_code:
          :param request:
          :return: