code: @DELETE
      @RequiresPermissions(I18nPermissions.KEY_DELETE)
      public Response deleteKey() {
          Key key = loadKeyIfExistsOrFail();
          keyRepository.remove(key);
          return Response.noContent().build();
      }
docs: Deletes a key.
  
  @return http code 204 (no content) or 404 if the key is not found